A convertible couch is a great investment when you need to save space in your living room or an extra sleeping surface. However, if you're looking for a different term to use for a convertible couch, there are a few synonyms you may want to consider. A sofa bed, for instance, has a similar function to a convertible couch and can be used as a bed when needed. A sleeper couch and a futon also serve a dual purpose as seating and a bed. Another option is a daybed, which can be converted into a bed when needed but is primarily used for lounging during the day. No matter what term you choose, a convertible couch and its synonyms can offer flexibility and practicality in your home.