Moulding (British English), or molding (American English), also coving (in United Kingdom, Australia), 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 moulding 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" moulding has right-angled upper and lower edges. A "sprung" moulding 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. Mouldings may be decorated with paterae as long, uninterrupted elements may be boring for eyes. Types Decorative mouldings have been made of wood, stone and cement. Recently mouldings have been made of extruded PVC and Expanded Polystyrene (EPS) as a core with a cement-based protective coating. Synthetic mouldings are a cost-effective alternative that rival the aesthetic and function of traditional profiles. Common mouldings include: Archivolt: Ornamental moulding or band following the curve on the underside of an arch. Astragal: Semi-circular moulding attached to one of a pair of doors to cover the gap where they meet. Baguette: Thin, half-round moulding, smaller than an astragal, sometimes carved, and enriched with foliages, pearls, ribbands, laurels, etc. When enriched with ornaments, it was also called chapelet. Bandelet: Any little band or flat moulding, which crowns a Doric architrave. It is also called a tenia (from Greek ταινία an article of clothing in the form of a ribbon). Baseboard, "base moulding" or "skirting board": Used to conceal the junction of an interior wall and floor, to protect the wall from impacts and to add decorative features. A "speed base" makes use of a base "cap moulding" set on top of a plain 1" thick board, however there are hundreds of baseboard profiles. Baton: See Torus Batten or board and batten: Symmetrical moulding that is placed across a joint where two parallel panels or boards meet Bead moulding: Narrow, half-round convex moulding, when repeated forms reeding Beading or bead: Moulding in the form of a row of half spherical beads, larger than pearling Other forms: Bead and leaf, bead and reel, bead and spindle Beak: Small fillet moulding left on the edge of a larmier, which