diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md b/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md
index d694b8cb3a45..eacc44678913 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md
@@ -19,6 +19,8 @@
 - For recognize receipt methods, parameters have been renamed to `receipt` and `receipt_url`.
 - `created_on` and `last_modified` are renamed to `requested_on` and `completed_on` in the
 `CustomFormModel`  and `CustomFormModelInfo` models.
+- `models` property of `CustomFormModel` is renamed to `submodels`
+- `CustomFormSubModel` is renamed to `CustomFormSubmodel`
 
 **New features**
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/README.md b/sdk/formrecognizer/azure-ai-formrecognizer/README.md
index d49bf6f0e644..6f562db53da0 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/README.md
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/README.md
@@ -66,7 +66,7 @@ az cognitiveservices account show --name "resource-name" --resource-group "resou
 ```
 
 #### Types of credentials
-The `credential` parameter may be provided as a [AzureKeyCredential][azure-key-credential] from [azure.core][azure_core], 
+The `credential` parameter may be provided as a [AzureKeyCredential][azure-key-credential] from [azure.core][azure_core],
 or as a credential type from Azure Active Directory.
 See the full details regarding [authentication][cognitive_authentication] of cognitive services.
 
@@ -75,12 +75,12 @@ See the full details regarding [authentication][cognitive_authentication] of cog
     The API key can be found in the Azure Portal or by running the following Azure CLI command:
 
     ```az cognitiveservices account keys list --name "resource-name" --resource-group "resource-group-name"```
-    
+
     Use the key as the credential parameter to authenticate the client:
     ```python
     from azure.ai.formrecognizer import FormRecognizerClient
     from azure.core.credentials import AzureKeyCredential
-    
+
     endpoint = "https://<region>.api.cognitive.microsoft.com/"
     credential = AzureKeyCredential("<api_key>")
     form_recognizer_client = FormRecognizerClient(endpoint, credential)
@@ -270,7 +270,7 @@ print("Completed on: {}".format(model.completed_on))
 
 print("Recognized fields:")
 # looping through the submodels, which contains the fields they were trained on
-for submodel in model.models:
+for submodel in model.submodels:
     print("The submodel with form type '{}' has recognized the following fields: {}".format(
         submodel.form_type,
         ", ".join([label for label in submodel.fields])
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/__init__.py b/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/__init__.py
index ef3321151b18..f65b9e8e92af 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/__init__.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/__init__.py
@@ -32,7 +32,7 @@
     FormLine,
     FormWord,
     CustomFormModel,
-    CustomFormSubModel,
+    CustomFormSubmodel,
     CustomFormModelField
 )
 
@@ -63,7 +63,7 @@
     'FormLine',
     'FormWord',
     'CustomFormModel',
-    'CustomFormSubModel',
+    'CustomFormSubmodel',
     'CustomFormModelField'
 ]
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/_models.py b/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/_models.py
index dd9d03c2e150..00d34f96d4d3 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/_models.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/azure/ai/formrecognizer/_models.py
@@ -676,7 +676,7 @@ class CustomFormModel(object):
         The date and time (UTC) when model training was requested.
     :ivar ~datetime.datetime completed_on:
         Date and time (UTC) when model training completed.
-    :ivar list[~azure.ai.formrecognizer.CustomFormSubModel] models:
+    :ivar list[~azure.ai.formrecognizer.CustomFormSubmodel] submodels:
         A list of submodels that are part of this model, each of
         which can recognize and extract fields from a different type of form.
     :ivar list[~azure.ai.formrecognizer.FormRecognizerError] errors:
@@ -690,7 +690,7 @@ def __init__(self, **kwargs):
         self.status = kwargs.get("status", None)
         self.requested_on = kwargs.get("requested_on", None)
         self.completed_on = kwargs.get("completed_on", None)
-        self.models = kwargs.get("models", None)
+        self.submodels = kwargs.get("submodels", None)
         self.errors = kwargs.get("errors", None)
         self.training_documents = kwargs.get("training_documents", [])
 
@@ -701,22 +701,22 @@ def _from_generated(cls, model):
             status=model.model_info.status,
             requested_on=model.model_info.created_date_time,
             completed_on=model.model_info.last_updated_date_time,
-            models=CustomFormSubModel._from_generated_unlabeled(model)
-            if model.keys else CustomFormSubModel._from_generated_labeled(model),
+            submodels=CustomFormSubmodel._from_generated_unlabeled(model)
+            if model.keys else CustomFormSubmodel._from_generated_labeled(model),
             errors=FormRecognizerError._from_generated(model.train_result.errors) if model.train_result else None,
             training_documents=TrainingDocumentInfo._from_generated(model.train_result)
             if model.train_result else None
         )
 
     def __repr__(self):
-        return "CustomFormModel(model_id={}, status={}, requested_on={}, completed_on={}, models={}, " \
+        return "CustomFormModel(model_id={}, status={}, requested_on={}, completed_on={}, submodels={}, " \
                 "errors={}, training_documents={})".format(
-                    self.model_id, self.status, self.requested_on, self.completed_on, repr(self.models),
+                    self.model_id, self.status, self.requested_on, self.completed_on, repr(self.submodels),
                     repr(self.errors), repr(self.training_documents)
                 )[:1024]
 
 
-class CustomFormSubModel(object):
+class CustomFormSubmodel(object):
     """Represents a submodel that extracts fields from a specific type of form.
 
     :ivar float accuracy: The mean of the model's field accuracies.
@@ -751,7 +751,7 @@ def _from_generated_labeled(cls, model):
         )] if model.train_result else None
 
     def __repr__(self):
-        return "CustomFormSubModel(accuracy={}, fields={}, form_type={})".format(
+        return "CustomFormSubmodel(accuracy={}, fields={}, form_type={})".format(
             self.accuracy, repr(self.fields), self.form_type
         )[:1024]
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_with_labels_async.py b/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_with_labels_async.py
index ef4bceabfee1..0b16095a4f67 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_with_labels_async.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_with_labels_async.py
@@ -55,7 +55,7 @@ async def train_model_with_labels(self):
             print("Recognized fields:")
             # looping through the submodels, which contains the fields they were trained on
             # The labels are based on the ones you gave the training document.
-            for submodel in model.models:
+            for submodel in model.submodels:
                 print("...The submodel with form type {} has accuracy '{}'".format(submodel.form_type, submodel.accuracy))
                 for name, field in submodel.fields.items():
                     print("...The model found field '{}' to have name '{}' with an accuracy of {}".format(
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_without_labels_async.py b/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_without_labels_async.py
index 71da402e0083..c977d079571b 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_without_labels_async.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/samples/async_samples/sample_train_model_without_labels_async.py
@@ -53,7 +53,7 @@ async def train_model_without_labels(self):
 
             print("Recognized fields:")
             # Looping through the submodels, which contains the fields they were trained on
-            for submodel in model.models:
+            for submodel in model.submodels:
                 print("...The submodel has form type '{}'".format(submodel.form_type))
                 for name, field in submodel.fields.items():
                     print("...The model found field '{}' to have label '{}'".format(
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_with_labels.py b/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_with_labels.py
index ebf395812630..7aed6c911b79 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_with_labels.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_with_labels.py
@@ -52,7 +52,7 @@ def train_model_with_labels(self):
         print("Recognized fields:")
         # looping through the submodels, which contains the fields they were trained on
         # The labels are based on the ones you gave the training document.
-        for submodel in model.models:
+        for submodel in model.submodels:
             print("...The submodel with form type {} has accuracy '{}'".format(submodel.form_type, submodel.accuracy))
             for name, field in submodel.fields.items():
                 print("...The model found field '{}' to have name '{}' with an accuracy of {}".format(
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_without_labels.py b/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_without_labels.py
index e7d58cdb8e96..baaad2ac1058 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_without_labels.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/samples/sample_train_model_without_labels.py
@@ -51,7 +51,7 @@ def train_model_without_labels(self):
 
         print("Recognized fields:")
         # Looping through the submodels, which contains the fields they were trained on
-        for submodel in model.models:
+        for submodel in model.submodels:
             print("...The submodel has form type '{}'".format(submodel.form_type))
             for name, field in submodel.fields.items():
                 print("...The model found field '{}' to have label '{}'".format(
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt.py
index 0a502f023692..efaf90c6e49b 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt.py
@@ -95,7 +95,7 @@ def test_mgmt_model_labeled(self, client, container_sas_url):
             self.assertEqual(a.errors, b.errors)
             self.assertEqual(a.page_count, b.page_count)
             self.assertEqual(a.status, b.status)
-        for a, b in zip(labeled_model_from_train.models, labeled_model_from_get.models):
+        for a, b in zip(labeled_model_from_train.submodels, labeled_model_from_get.submodels):
             for field1, field2 in zip(a.fields.items(), b.fields.items()):
                 self.assertEqual(a.fields[field1[0]].name, b.fields[field2[0]].name)
                 self.assertEqual(a.fields[field1[0]].accuracy, b.fields[field2[0]].accuracy)
@@ -131,7 +131,7 @@ def test_mgmt_model_unlabeled(self, client, container_sas_url):
             self.assertEqual(a.errors, b.errors)
             self.assertEqual(a.page_count, b.page_count)
             self.assertEqual(a.status, b.status)
-        for a, b in zip(unlabeled_model_from_train.models, unlabeled_model_from_get.models):
+        for a, b in zip(unlabeled_model_from_train.submodels, unlabeled_model_from_get.submodels):
             for field1, field2 in zip(a.fields.items(), b.fields.items()):
                 self.assertEqual(a.fields[field1[0]].label, b.fields[field2[0]].label)
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt_async.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt_async.py
index babc3d09e558..f0b65db830f2 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt_async.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_mgmt_async.py
@@ -95,7 +95,7 @@ async def test_mgmt_model_labeled(self, client, container_sas_url):
             self.assertEqual(a.errors, b.errors)
             self.assertEqual(a.page_count, b.page_count)
             self.assertEqual(a.status, b.status)
-        for a, b in zip(labeled_model_from_train.models, labeled_model_from_get.models):
+        for a, b in zip(labeled_model_from_train.submodels, labeled_model_from_get.submodels):
             for field1, field2 in zip(a.fields.items(), b.fields.items()):
                 self.assertEqual(a.fields[field1[0]].name, b.fields[field2[0]].name)
                 self.assertEqual(a.fields[field1[0]].accuracy, b.fields[field2[0]].accuracy)
@@ -129,7 +129,7 @@ async def test_mgmt_model_unlabeled(self, client, container_sas_url):
             self.assertEqual(a.errors, b.errors)
             self.assertEqual(a.page_count, b.page_count)
             self.assertEqual(a.status, b.status)
-        for a, b in zip(unlabeled_model_from_train.models, unlabeled_model_from_get.models):
+        for a, b in zip(unlabeled_model_from_train.submodels, unlabeled_model_from_get.submodels):
             for field1, field2 in zip(a.fields.items(), b.fields.items()):
                 self.assertEqual(a.fields[field1[0]].label, b.fields[field2[0]].label)
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_repr.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_repr.py
index 646237282d82..b9d6380f91e6 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_repr.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_repr.py
@@ -118,8 +118,8 @@ def custom_form_model_field():
 
 @pytest.fixture
 def custom_form_sub_model(custom_form_model_field):
-    model = _models.CustomFormSubModel(accuracy=0.99, fields={"name": custom_form_model_field[0]}, form_type="Itemized")
-    model_repr = "CustomFormSubModel(accuracy=0.99, fields={{'name': {}}}, form_type=Itemized)".format(custom_form_model_field[1])[:1024]
+    model = _models.CustomFormSubmodel(accuracy=0.99, fields={"name": custom_form_model_field[0]}, form_type="Itemized")
+    model_repr = "CustomFormSubmodel(accuracy=0.99, fields={{'name': {}}}, form_type=Itemized)".format(custom_form_model_field[1])[:1024]
     assert repr(model) == model_repr
     return model, model_repr
 
@@ -207,13 +207,13 @@ def test_custom_form_model(self, custom_form_sub_model, form_recognizer_error, t
             status=_models.CustomFormModelStatus.creating,
             requested_on=datetime.datetime(1, 1, 1),
             completed_on=datetime.datetime(1, 1, 1),
-            models=[custom_form_sub_model[0], custom_form_sub_model[0]],
+            submodels=[custom_form_sub_model[0], custom_form_sub_model[0]],
             errors=[form_recognizer_error[0]],
             training_documents=[training_document_info[0], training_document_info[0]]
         )
 
         model_repr = "CustomFormModel(model_id=1, status=creating, requested_on=0001-01-01 00:00:00, " \
-            "completed_on=0001-01-01 00:00:00, models=[{}, {}], errors=[{}], training_documents=[{}, {}])".format(
+            "completed_on=0001-01-01 00:00:00, submodels=[{}, {}], errors=[{}], training_documents=[{}, {}])".format(
                 custom_form_sub_model[1], custom_form_sub_model[1], form_recognizer_error[1], training_document_info[1], training_document_info[1]
             )[:1024]
 
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training.py
index d29b01ab3b02..2ee398403abf 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training.py
@@ -42,7 +42,7 @@ def test_training(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertEqual(doc.status, "succeeded")
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             for key, field in sub.fields.items():
                 self.assertIsNotNone(field.label)
@@ -65,7 +65,7 @@ def test_training_multipage(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertIsNotNone(doc.status)
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             for key, field in sub.fields.items():
                 self.assertIsNotNone(field.label)
@@ -126,7 +126,7 @@ def test_training_with_labels(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertEqual(doc.status, "succeeded")
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             self.assertIsNotNone(sub.accuracy)
             for key, field in sub.fields.items():
@@ -150,7 +150,7 @@ def test_training_multipage_with_labels(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertIsNotNone(doc.status)
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             self.assertIsNotNone(sub.accuracy)
             for key, field in sub.fields.items():
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training_async.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training_async.py
index c6c8f761cdad..1507ea299c23 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training_async.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/test_training_async.py
@@ -43,7 +43,7 @@ async def test_training(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertEqual(doc.status, "succeeded")
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             for key, field in sub.fields.items():
                 self.assertIsNotNone(field.label)
@@ -65,7 +65,7 @@ async def test_training_multipage(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertIsNotNone(doc.status)
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             for key, field in sub.fields.items():
                 self.assertIsNotNone(field.label)
@@ -126,7 +126,7 @@ async def test_training_with_labels(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertEqual(doc.status, "succeeded")
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             for key, field in sub.fields.items():
                 self.assertIsNotNone(field.accuracy)
@@ -148,7 +148,7 @@ async def test_training_multipage_with_labels(self, client, container_sas_url):
             self.assertIsNotNone(doc.page_count)
             self.assertIsNotNone(doc.status)
             self.assertEqual(doc.errors, [])
-        for sub in model.models:
+        for sub in model.submodels:
             self.assertIsNotNone(sub.form_type)
             self.assertIsNotNone(sub.accuracy)
             for key, field in sub.fields.items():
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/tests/testcase.py b/sdk/formrecognizer/azure-ai-formrecognizer/tests/testcase.py
index 7b4cab578c47..e5c688d47f52 100644
--- a/sdk/formrecognizer/azure-ai-formrecognizer/tests/testcase.py
+++ b/sdk/formrecognizer/azure-ai-formrecognizer/tests/testcase.py
@@ -117,18 +117,18 @@ def assertModelTransformCorrect(self, model, actual, unlabeled=False):
         if unlabeled:
             if actual.keys.clusters:
                 for cluster_id, fields in actual.keys.clusters.items():
-                    self.assertEqual(cluster_id, model.models[int(cluster_id)].form_type[-1])
-                    for field_idx, model_field in model.models[int(cluster_id)].fields.items():
+                    self.assertEqual(cluster_id, model.submodels[int(cluster_id)].form_type[-1])
+                    for field_idx, model_field in model.submodels[int(cluster_id)].fields.items():
                         self.assertIn(model_field.label, fields)
 
         else:
             if actual.train_result:
                 if actual.train_result.fields:
                     for a in actual.train_result.fields:
-                        self.assertEqual(model.models[0].fields[a.field_name].name, a.field_name)
-                        self.assertEqual(model.models[0].fields[a.field_name].accuracy, a.accuracy)
-                    self.assertEqual(model.models[0].form_type, "form-"+model.model_id)
-                    self.assertEqual(model.models[0].accuracy, actual.train_result.average_model_accuracy)
+                        self.assertEqual(model.submodels[0].fields[a.field_name].name, a.field_name)
+                        self.assertEqual(model.submodels[0].fields[a.field_name].accuracy, a.accuracy)
+                    self.assertEqual(model.submodels[0].form_type, "form-"+model.model_id)
+                    self.assertEqual(model.submodels[0].accuracy, actual.train_result.average_model_accuracy)
 
     def assertFormPagesTransformCorrect(self, pages, actual_read, page_result=None, **kwargs):
         for page, actual_page in zip(pages, actual_read):