The differences between a sofa and a couch are not exactly striking. The two are actually very similar but differences do exist. So don’t make the mistake of thinking they’re synonyms. Once you learn the characteristics that define each piece, you’ll never mistake one for another again.
Etymology and history.
The terms “sofa” and “couch” have two very different origins. The first one comes from the Arabic term “suffah” which describes a bench covered with blankets and cushions.The second one comes from the French “couche” and it’s a piece of furniture that was popularly used in the Victorian era.
As for their structure and shape, sofas usually feature two armrests and a uniform back while couches generally feature one armrest or none at all and a tapered back.
In terms of size, there is a remarkable difference between a sofa and a couch. Sofas are designed to provide more seating space and, of course, this also means they occupy more floorspace. Usually they provide seating space for four but they can also be bigger.
On the other hand, couches can comfortably seat two to three persons and are more compact Another remarkable difference is that a sofa may have a pull out bed.
In terms of function, the difference between a sofa and couch is easily visible. In most cases, couches are used in more casual and informal settings like in an entertainment room or a cozy living space.
Sofas are generally perceived as being slightly more formal. They are used in living rooms and they give out an elegant and classy vibe.