Coats of paint are LAYERS of paint applied to a surface in order to protect it and give it a desired color or finish. The term 'coats of paint' is often used to refer to the multiple LAYERS of paint that are applied to a surface, usually in a specific order. Each layer of paint serves a different purpose, such as providing a base coat, a protective layer, or a glossy finish. The number of coats of paint applied to a surface depends on the type of paint being used and the desired outcome.