What is the difference between a sofa and a chair?

The difference between a sofa and a chair can be summed up by the number of people who can sit on it at one time. A chair is for just one person, while a sofa can accommodate two or more people. Accent chairs used in seating areas often feature upholstery similar to a sofa. However, not all chairs come upholstered, while the vast majority of sofas do. On 1stDibs, explore a diverse assortment of antique, vintage and contemporary sofas and chairs.