What do you call these?

[xotoxi]

The following is the subdivision of USMB.


USMB Office
- Introduce Yourself
- Announcements and Feedback

US Discussion
- Politics
- Congress
- Healthcare/Insurance/Govt Healthcare
- Media
- Immigration/Illegal Immigration
- Stock Market
- Law and Justice System
- Environment
- Education
- Energy
- Economy
- Science and Technology
- Religion and Ethics
- History
- Health and Lifestyle
- Military
- Conspiracy Theories
- Race Relations/Racism
- Tea Party
- General --

Global Discussion
- General Global Topics
- The Middle East - General
- Iraq
- Iran
- Afghanistan
- Israel and Palestine
- Europe
- Canada
- Asia
- Africa

Site Sponsors
- Money4Cards.com
- US Law for Jabrones

The Taunting Arena
- The Flame Zone
- Echo Zulu's Rep Fest Zone
- The Romper Room

Hobbies
- Sports
- The Outdoors
- Food & Wine
- Writing
- Pets
- Photography and Imaging
- Music
- Computers
- Arts & Crafts

Community
- General Discussion
- Reviews
- Humor

What do we call the subdivisions that I highlighted in blue and in red?

Are the blue subdivisions called "divisions" or "domains" or "arenas"? Or something else?

Are the red subdivisions called "forums"?

Or maybe they are called "subforums" and the blue are called "forums"?

This is something that I need to know!!!

 

[uscitizen]

I think Politics should be under hobbies.

 

[Big Black Dog]

I think Politics should be under hobbies.

No - politics should be under humor.