Microsoft 365 accounts. While that could be done with a couple of clever workarounds, the simpler solution is to just use Word online.
Just like with Google Docs, with Word online you can share documents, comment on documents, and make editing suggestions. And a bonus feature is being able to set passwords and expiration dates on shared Word documents. In the following short video I demonstrate how to collaborate on Word documents online.
On a related note, I'm working on developing a playlist of new Microsoft product tutorials to complement the extensive playlist of more than 400 Google product tutorials on my YouTube channel.