Other forms: upholsteries
Upholstery refers to the covering on furniture. Without upholstery, your couch wouldn't be very comfortable.
This is a word specific to furniture, especially the chairs and couches found in most living rooms. Upholstery consists of the material — including springs, padding, and fabric — that cover the bare bones of the furniture you sit on. If you have ever spilled a drink on a couch, someone might have yelled, "Watch out! You'll stain the upholstery!" People who put the upholstery on furniture are called upholsterers.