what is a sofa

A sofa is a long, upholstered seat with arms and a back, primarily meant for sitting and is considered more formal. On the other hand, a couch is a versatile, upholstered piece of furniture designed for seating multiple people, typically with cushions and may or may not have armrests. It is considered more casual and versatile in design. While the terms are often used interchangeably, the main difference lies in their design and intended use