What is the difference between a suit and a coat?

The difference between a suit and a coat depends on what you mean by coat. Suit is the term for a matching blazer and pants often worn for work and special occasions. Generally, the term coat describes a piece of outerwear, usually worn for warmth. Some people may refer to a suit jacket as a coat. In this case, the difference between a coat and a suit is that the coat is just the jacket, while the word suit refers to both the jacket and the matching pants. On 1stDibs, explore a variety of suits.