What defines a wall?

What defines a wall is vertical structure that encloses, divides, supports, or protects space, typically built from brick, concrete, wood studs with drywall, or stone, forming sides of building or room and providing structural, privacy, and barrier functions. A wall is defined by being vertical, continuous, and having height and length much greater than thickness, distinguishing it from floor or ceiling which are horizontal. Structural definition includes load-bearing wall that supports weight of roof, floors, and upper stories transferring load to foundation, and non-load-bearing partition wall that only divides space. Functional definition includes exterior wall that forms building envelope protecting from weather, providing insulation and security, and interior wall that divides rooms for privacy and organization, similar to panels of Packout system defining storage compartments. A wall defines boundary, creating enclosure, and can be solid or have openings for doors and windows. Legally, building codes define wall by fire rating, height, and structural role. So wall is defined as vertical building element that encloses, supports, divides, or protects, with characteristics of vertical orientation, structural or partition function, and material composition providing enclosure and support for building.