What is the difference between a couch and a sofa? 

A couch and a sofa are both pieces of furniture that are used for seating, but there are some subtle differences between the two. 

A couch is generally considered to be more casual in nature and is typically used in more informal settings, such as a living room or den. They are often smaller in size and have a more relaxed, informal look and feel to them. They also tend to be less expensive than a sofa. 

A sofa, on the other hand, is considered to be more formal and is typically used in more formal settings such as a living room, sitting room or drawing room. They are often larger in size and have a more sophisticated look and feel to them. They also tend to be more expensive than a couch. 

The word “couch” is more commonly used in American English, while the word “sofa” is more commonly used in British English. However, both terms can be used interchangeably, and the distinction between the two is largely a matter of personal preference. 

In terms of function, both a couch and a sofa can be used for sitting, reclining, and sleeping, but a sofa has the added feature of being convertible into a bed and having multiple seats. Some also have added features such as armrests, cushions and even built-in recliners, giving them a more comfortable and luxurious look. 

In summary, while the terms “couch” and “sofa” can be used interchangeably, they do have some subtle differences in terms of formality and style. A couch is generally considered to be more casual and less expensive, while a sofa is considered to be more formal and more expensive.