arrièreplan
Arrière-plan is a French term meaning the part of a scene that is farthest from the viewer. It contrasts with the premier plan (foreground) and, in many discussions, with the middle ground. This organization is used across visual arts and media to convey depth and context.
In painting and photography, the arrière-plan provides setting, atmosphere, and scale. It can be natural elements
In cinema, theater, and design, backdrops, sets, and backgrounds establish place and mood without drawing attention
Etymology: the word derives from arrière meaning behind and plan meaning plane. Related terms include premier