The most common types of couches are the "loveseat", or British two-seater, and the settee or sofa, with two or more seats. A sectional sofa, often just referred to as a "sectional", is formed from multiple sections (typically two to four) and usually includes at least two pieces that join at an angle of 90 degrees or slightly greater, used to wrap around walls or other furniture. A sectional sofa is known as a corner sofa in the UK.