Solid
just that a brick
An Adobe Brick
For the same reason most things are called what they are. At some point someone said "this is a brick" and the name stuck.
A brick kiln.
A flat topped mud brick tomb is called a mastaba.
I assume it's just the bottom. It might be called the base of the brick though.
I have heard about something called brick veneer, but I'm not sure what it is. What is brick veneer made of?
If a person is called a brick maker that means he makes bricks.
They can be called "hand tossed"
Bat
ADOBE
Brick is commonly called "brick veneer". It is a Wall covering. It does not support weight. The roof should not connect to the brick. Trim "frieze" covers the gap between the brick and soffit.