sofa

This term describes a piece of furniture designed for lounging and social interaction, typically evoking a sense of domestic comfort and relaxation. It is often used interchangeably with couch, though in some interior design contexts, a sofa is viewed as a more formal piece of furniture intended for a living room, whereas a couch might be seen as more casual. As a standard countable noun, it follows regular English pluralization rules. There are no irregular grammatical properties or partitive requirements associated with this word.