A bench provides a place for multiple people to sit. It is usually not upholstered.
Benches are not usually indoor furniture. They are more often used in gardens, on decks or porches. Benches may also be placed in the rooms where we transition from outside to inside, like a mud room or hallway.
Benches are generally made of wood or metal, or sometimes from plastic. Some benches have arms and a back, others do not.
- Wikipedia's article on Bench (furniture)