A couch, also called a sofa, is an item of furniture

Furniture

Furniture is the mass noun for the movable objects intended to support various human activities such as seating and sleeping in beds, to hold objects at a convenient height for work using horizontal surfaces above the ground, or to store things...

 designed to seat more than one person, and providing support for the back and arms. Typically, it will have an armrest

Armrest

In an automotive context, an armrest is a feature found in many modern vehicles on which occupants can rest their arms. Armrests are also found on chairs in general.Armrests are more prolific in larger, more expensive models of car....

 on either side. In homes couches are normally found in the family room, living room

Living room

A living room, also known as sitting room, lounge room or lounge , is a room for entertaining adult guests, reading, or other activities...

, den or the lounge. They consist of a wooden or metal structure supplemented by padding and are covered in a variety of textile

Textile

A textile or cloth is a flexible woven material consisting of a network of natural or artificial fibres often referred to as thread or yarn. Yarn is produced by spinning raw fibres of wool, flax, cotton, or other material to produce long strands...

s, leather

Leather

Leather is a durable and flexible material created via the tanning of putrescible animal rawhide and skin, primarily cattlehide. It can be produced through different manufacturing processes, ranging from cottage industry to heavy industry.-Forms:...

, or sometimes a combination of both.