A couch is a long, upholstered bench or seat that is designed to be used for sitting and relaxing. It typically has an armrest on either side and can come in various styles, shapes, and sizes. Couches are commonly found in living rooms, family rooms, and other social areas of homes where people gather to watch TV, read, talk, or simply relax. They can also be used as a piece of furniture in bedrooms, offices, or other spaces for additional seating.