AutoSave and AutoRecover are two different features
OneDrive's AutoSave continuously saves your actual document to the cloud in real time as you edit it, while AutoRecover quietly creates a temporary local backup at set intervals purely as a safety net -- the two toggles live in different parts of the Options window and serve genuinely different purposes.
What happens after an unexpected shutdown
If Word closes unexpectedly, reopening it typically brings up a Document Recovery pane on the left side of the screen, listing the most recent autosaved versions it found, so you can open and compare them to your last manually saved copy before deciding which to keep.
Frequently Asked Questions
Are AutoSave and AutoRecover the same feature?
No. OneDrive's AutoSave saves your file to the cloud in real time, while AutoRecover creates a temporary local backup at set intervals -- they work independently of each other and are controlled from different places.
How do I recover a file after Word closes unexpectedly?
Reopen Word and check the Document Recovery pane that typically appears on the left side of the screen, where you can select and open the most recent autosaved version it found.