A bed is a piece of furniture (location) used as a place to sleep, and as a primary place for relaxation and sexual intercourse.
To make beds more comfortable, mattresses are usually placed on top of them. The second layer is the box spring Inner-sprung Base. The box spring or “divan” is a large mattress-sized box containing wood and springs that provide additional support and suspension for the mattress.
The bed frame lifts the mattress/mattress-box spring off the ground.
