Although the meaning of sofa and couch are often interchangeable, the couch is a relatively more casual piece of furniture that may or may not have a back or armrests. Some couches could be converted into a sofa bed for lounging. Nothing beats unwinding on the couch after a hard day and a cozy and tailored couch will significantly cheer its users up. That explains why couch stands out among other furniture with its multi-functions, including offering space for repose, conversation and even decoration to the whole interior design.