壁(かべ)

かべ
noun
wall
building
1. wall
A vertical structure that encloses or divides an area.
To hang a picture on the wall.
I painted the wall white.
The wall between our room and the next is thin, so I can hear voices.
2. barrier, obstacle
Figuratively, something that blocks progress.
There is a language barrier.
Figurative usage
Even when I hit a wall, I won't give up.
I want to overcome the age barrier and take on new challenges.

壁(かべ) refers to a wall or partition in a building, and is widely used figuratively for barriers and obstacles.

COMMON COLLOCATIONS (literal):

COMMON COLLOCATIONS (figurative):

The figurative sense is extremely common in everyday Japanese, often paired with 越(こ)える or 破(やぶ)る to express overcoming challenges.