Sosia Transforsofa

Types
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 or corner suite in the UK.
Other couch variants include the divan, the fainting couch (backless or partial-backed), the chaise longue (long with one armrest), the canapé (an ornamental 3-seater), and the ottoman (generally considered a type of footstool). To conserve space, some sofas double as beds in the form of sofa-beds, daybeds, or futons. There are also couches known by genericized trademarked names, such as a davenport or Chesterfield (named for one of the Earls of Chesterfield).