Moulding with a concave profile used primarily where two members meet at a right angle; a rounded inside corner; opposite to a bullnose; (also scotia, cavetto, ceiling cornice).

A concave shaped moulding used to cover the joint formed where the face of the riser meets the underside of the tread. On an open stair the cove moulding is continued under the return nosing.

A small moulded wood lineal piece, usually formed with a scooped face, used to trim and fasten a panel of some type into a frame.