A doorstop is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. The same word is used to refer to a thin slat built inside a door frame to prevent a door from swinging through when closed. A doorstop (applied) may also be a small bracket or 90-degree piece of metal applied to the frame of a door to stop the door from swinging (bi-directional) and converting that door to a single direction. The doorstop can be a separate part or integrated with a hinge or door closer.
A handmade wooden doorstop
A manufactured black rubber doorstop
An integrated doorstop
A metal brick used as a doorstop
A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a building, room, or vehicle. Doors are generally made of a material suited to the door's task. They are commonly attached by hinges, but can move by other means, such as slides or counterbalancing.
Stone door in Hampi (India)
A massive door socket from Persepolis (modern-day Iran)
Roman folding doors at Pompeii, from the first century AD, similar with Neoclassical doors from the 19th century
Roman wall painting of an ornate door, in the Villa Boscoreale (Italy), from the first century AD
