if i were you i would combine the two words like souch or cofa
Sofa.
Couch
Sofa
there isn't one because couch is another word for sofa
Sofa, bench or couch.
Yes. The word sofa is from the Arabic word suffa. It originally meant a carpet or mat, while in English it refers to a couch, divan, or upholstered bench seat.
The synonymous terms are sofa and couch.
Hypothetically, the answer is yes. Technically the answer is no because a bed is designed specifically as a bed in every sense of the word. A couch can be slept on but are not typically designed for sleeping, unless it is a pull out sofa. A futon on the other hand is a fold up bed that turns into a small to medium sofa.
Arabic ṣuffa meaning "long bench"
Another word for furniture is furnishings. However there aren't any other broad synonyms for furniture. It gets specific after that for couch/sofa or hutch/cabinet/wardrobe etc.
For all intents and purposes, in daily life in North America, the meaning is the same. If you say the words couch or sofa most people in English speaking countries will envision the same thing. And, lets face it, culture usually sets the standard for the meaning of words. When culture changes, the meanings of words tend to change. However, technically (or should I say linguistically) couch and sofa are different. The origin of the word sofa is Arabic and refers to a bench type of furniture raised slightly from the floor. This bench usually had a back and arms. The word couch is French in origin, from a word that meant to lie down. A couch was originally more like a bed, a raised seat without back or arms. But today they are basically the same thing. By the way, in England they don't really use the word couch. They prefer sofa or settee.
A sofa is an English word.