You can share a Word for the web document with other people so they can view and edit it. They don't even need a OneDrive account.
Here's how to share a document on OneDrive:
Open OneDrive, and select the document you want to share.
Select Share.
In the sharing window, enter the name, group, or email addresses of the people you want to share the document with.
Tip
To share the document with multiple people, separate the email addresses with a semicolon or comma.
From the dropdown, click the down arrows, and set the permissions for the people you're sharing with.
Add a message in the box (optional), and select Send.
Note
The people you shared the document with will get an email message with a link to the document that they can open in their web browser.