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A couch, also known as a sofa, settee, futon, or chesterfield (see Etymology below), is a piece of furniture for seating two or three people. It is commonly found in the form of a bench, with upholstered armrests, and often fitted with springs and tailored cushions. Although a couch is used primarily for seating, it may be used for sleeping. In homes, couches are normally put in the family room, living room, den or lounge. They are sometimes also found in non-residential settings such as hotels, lobbies of commercial offices, waiting rooms, and bars. Couches can also vary in size, color, and design.