Facebook simply called face would probably not have worked as well.
Did you even read my post?
Facebook is NOT the same thing as Redline Law.
Facebook is a brand using 2 unconnected words and the other is a brand (Redline) that adds on a Business Sector/Descriptor (like Construction, Media, Design, Hearing, Medical, Company, Group, Holdings, etc.) to the end, which in this case is Law.
Redline is the core brand, while Law is a generic business sector or area.
Facebook's full business name is now Meta Platforms (it used to be Facebook Company). Meta is the brand and Platforms is the business sector, type or descriptor. They use Meta as their prime brand, just as they previously used Facebook (and not Facebook Company) as their primary brand.
In order to understand domains and branding, you need to understand the difference between Lucky Charms and Lucky Strike, and other names like Lucky Design and Lucky Immigration.