Enamel, Enamels, and GLAZE are all terms used to describe a hard glossy coating. ENAMEL is a type of glass-like material that is applied to metal, wood, or other surfaces to provide a decorative and protective finish. Enamels are a type of paint that is made from a combination of pigments and resins that are heated and fused together. GLAZE is a thin, glossy coating that is applied to pottery or other ceramic objects to give them a glossy finish.