an artifact that covers something else (usually to protect or shelter or conceal it)

form a coat over

put a coat on; cover the surface of; furnish with a surface

a protective coating of asphalt and filter used on structural metals that are exposed to weathering

a layer of paint covering something else

a light-sensitive coating on paper or film; consists of fine grains of silver bromide suspended in a gelatin

any smooth glossy coating that resembles ceramic glaze

an ornamental coating to a building