Paint

Paint is any liquid, liquifiable, or mastic composition which after application to a substrate in a thin layer is transformed to an opaque solid film.
Paint is used to protect, decorate (such as adding color), or add functionality to an object or outside by covering it with a pigmented coating. An example of protection is to retard corrosion of metal. An example of decoration is to add festive trim to a room interior. An example of added functionality is to alter light reflection or heat radiation of a surface.
As a verb, painting is the application of paint. Someone who paints creatively is usually called a painter, while someone who paints commercially is often referred to as a painter and decorator, or house painter.
Paint can be applied to almost any kind of object. It is used, among many other uses, in the production of art, in industrial coating, as a driving aid, or as a barrier to prevent corrosion or water damage. Paint is a semifinished product, as the final product is the painted article itself.