From Tolkien Gateway
All articles in Tolkien Gateway are broken down into three main categories:
- Eä is the name for the universe of Tolkien's creation (commonly, but incorrectly, referred to as the world of Middle-earth), therefore all articles under Eä pertain to this;
- Other fictional worlds pertains to fictional worlds created by Tolkien other than Eä;
- all articles under Real-world pertain to the real-world.