The ceiling.
The line where the ceiling meets the wall is called a cornice. A cornice can be set off from the ceiling with the use of cornice trim. The line where the wall meets the floor is called a baseboard.
A ceiling painting is called a mural. Most people think of a mural as a wall painting, but it extends to floors and ceilings as well. the definition of a mural does say it is directly painted on the walls, floor or ceiling.
A ceiling partition is a track on the ceiling that may have a metal or wooden wall fitting into it. This divides a room by the ceiling support.
Why would you need to? The wall is holding the ceiling up. A better description of what you want to do would help.
This tv can be mounted on the wall only.
wall color
Projector t.v.s are best suspended from the ceiling.
Paint the ceiling first. Work top down.
"Tikra" (תקרה) is how you say ceiling in Hebrew.
The wall and ceiling textures do not have to match. depending on your taste, the ceiling could be popcorned or swirled, or the walls could even be an adobe style. The homeowners imagination is the only limit.
Mural