Molding (spelled moulding and alternatively called coving in British and Australian English), is a strip of material with various profiles used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster, but may be of plastic or reformed wood. In classical architecture and sculpture, the molding is often carved in marble or other stones. In historic architecture, and some expensive modern buildings, it may be formed in place with plaster.
A "plain" molding has right-angled upper and lower edges. A "sprung" molding has upper and lower edges that bevel towards its rear, allowing mounting between two non-parallel planes (such as a wall and a ceiling), with an open space behind. Moldings may be decorated with paterae as long, uninterrupted elements may be boring for eyes.