diff --git a/lib/shared/thread-actions-utils.js b/lib/shared/thread-actions-utils.js
--- a/lib/shared/thread-actions-utils.js
+++ b/lib/shared/thread-actions-utils.js
@@ -47,7 +47,7 @@
 type CreateRealThreadParameters = {
   +threadInfo: ThreadInfo,
   +dispatchActionPromise: DispatchActionPromise,
-  +createNewThread: ClientNewThreadRequest => Promise<NewThreadResult>,
+  +createNewThinThread: ClientNewThreadRequest => Promise<NewThreadResult>,
   +sourceMessageID: ?string,
   +viewerID: ?string,
   +handleError?: () => mixed,
@@ -57,7 +57,7 @@
 async function createRealThreadFromPendingThread({
   threadInfo,
   dispatchActionPromise,
-  createNewThread,
+  createNewThinThread,
   sourceMessageID,
   viewerID,
   calendarQuery,
@@ -75,7 +75,7 @@
       otherMemberIDs.length > 0,
       'otherMemberIDs should not be empty for threads',
     );
-    resultPromise = createNewThread({
+    resultPromise = createNewThinThread({
       type: pendingThreadType(otherMemberIDs.length),
       initialMemberIDs: otherMemberIDs,
       color: threadInfo.color,
@@ -86,7 +86,7 @@
       sourceMessageID,
       'sourceMessageID should be set when creating a sidebar',
     );
-    resultPromise = createNewThread({
+    resultPromise = createNewThinThread({
       type: threadTypes.SIDEBAR,
       initialMemberIDs: otherMemberIDs,
       color: threadInfo.color,
diff --git a/native/input/input-state-container.react.js b/native/input/input-state-container.react.js
--- a/native/input/input-state-container.react.js
+++ b/native/input/input-state-container.react.js
@@ -155,7 +155,7 @@
     input: SendMultimediaMessageInput,
   ) => Promise<SendMessageResult>,
   +sendTextMessage: (input: SendTextMessageInput) => Promise<SendMessageResult>,
-  +newThread: (request: ClientNewThreadRequest) => Promise<NewThreadResult>,
+  +newThinThread: (request: ClientNewThreadRequest) => Promise<NewThreadResult>,
   +textMessageCreationSideEffectsFunc: CreationSideEffectsFunc<RawTextMessageInfo>,
 };
 type State = {
@@ -552,7 +552,7 @@
       threadCreationPromise = createRealThreadFromPendingThread({
         threadInfo,
         dispatchActionPromise: this.props.dispatchActionPromise,
-        createNewThread: this.props.newThread,
+        createNewThinThread: this.props.newThinThread,
         sourceMessageID: threadInfo.sourceMessageID,
         viewerID: this.props.viewerID,
         calendarQuery,
@@ -1734,7 +1734,7 @@
     const callBlobServiceUpload = useBlobServiceUpload();
     const callSendMultimediaMessage = useSendMultimediaMessage();
     const callSendTextMessage = useSendTextMessage();
-    const callNewThread = useNewThread();
+    const callNewThinThread = useNewThread();
     const dispatchActionPromise = useDispatchActionPromise();
     const dispatch = useDispatch();
     const mediaReportsEnabled = useIsReportEnabled('mediaReports');
@@ -1755,7 +1755,7 @@
         blobServiceUpload={callBlobServiceUpload}
         sendMultimediaMessage={callSendMultimediaMessage}
         sendTextMessage={callSendTextMessage}
-        newThread={callNewThread}
+        newThinThread={callNewThinThread}
         dispatchActionPromise={dispatchActionPromise}
         dispatch={dispatch}
         staffCanSee={staffCanSee}
diff --git a/web/input/input-state-container.react.js b/web/input/input-state-container.react.js
--- a/web/input/input-state-container.react.js
+++ b/web/input/input-state-container.react.js
@@ -149,7 +149,7 @@
     input: LegacySendMultimediaMessageInput,
   ) => Promise<SendMessageResult>,
   +sendTextMessage: (input: SendTextMessageInput) => Promise<SendMessageResult>,
-  +newThread: (request: ClientNewThreadRequest) => Promise<NewThreadResult>,
+  +newThinThread: (request: ClientNewThreadRequest) => Promise<NewThreadResult>,
   +pushModal: PushModal,
   +sendCallbacks: $ReadOnlyArray<() => mixed>,
   +registerSendCallback: (() => mixed) => void,
@@ -581,7 +581,7 @@
       threadCreationPromise = createRealThreadFromPendingThread({
         threadInfo,
         dispatchActionPromise: this.props.dispatchActionPromise,
-        createNewThread: this.props.newThread,
+        createNewThinThread: this.props.newThinThread,
         sourceMessageID: threadInfo.sourceMessageID,
         viewerID: this.props.viewerID,
         calendarQuery,
@@ -1671,7 +1671,7 @@
     const callDeleteUpload = useDeleteUpload();
     const callSendMultimediaMessage = useLegacySendMultimediaMessage();
     const callSendTextMessage = useSendTextMessage();
-    const callNewThread = useNewThread();
+    const callNewThinThread = useNewThread();
     const dispatch = useDispatch();
     const dispatchActionPromise = useDispatchActionPromise();
     const modalContext = useModalContext();
@@ -1708,7 +1708,7 @@
         deleteUpload={callDeleteUpload}
         sendMultimediaMessage={callSendMultimediaMessage}
         sendTextMessage={callSendTextMessage}
-        newThread={callNewThread}
+        newThinThread={callNewThinThread}
         dispatch={dispatch}
         dispatchActionPromise={dispatchActionPromise}
         pushModal={modalContext.pushModal}