A metal or wood frame with legs used to support a mattress and foundation: Conventional height is 7-1/4 inches and the low profile version is shorter. Generally a headboard can be attached. Metal frames are sometimes known as "Hollywood" frame.
A frame or type of platform that a bed rests on. Usually, a metal or wooden frame with legs used to raise the bed off of the floor, headboards can be attached to most bed frames.
A bed frame or bedstead is the part of a bed used to position a mattress or box spring set off from the ground. Bed frames are typically made of wood or metal. A bed frame is made up of head, foot, and side rails.