This Architectural Drawing is AutoCAD 2d drawing of 2d cad blocks of sofa and couch in AutoCAD, dwg file. The term 'couch' stems from the French word 'coucher,' meaning to lie down. The history of this furniture item is the same as the sofa. The terms are interchangeable. However, most in the interior design industry rarely use the term couch but opt for a sofa instead.