In architecture, a cornice (from the Italian cornice meaning "ledge") is generally any horizontal decorative moulding that crowns a building or furniture element—for example, the cornice over a door or window, around the top edge of a pedestal, or along the top of an interior wall. A simple cornice may be formed just with a crown, as in crown moulding atop an interior wall or above kitchen cabinets or a bookcase.
A projecting cornice on a building has the function of throwing rainwater free of its walls. In residential building practice, this function is handled by projecting gable ends, roof eaves and gutters. However, house eaves may also be called "cornices" if they are finished with decorative moulding. In this sense, while most cornices are also eaves (overhanging the sides of the building), not all eaves are usually considered cornices. Eaves are primarily functional and not necessarily decorative, while cornices have a decorative aspect.
A building's projecting cornice may appear to be heavy and hence in danger of falling, particularly on commercial buildings, but often may actually be very light, made of pressed metal.
In Ancient Greek architecture and its successors using the classical orders in the tradition of classical architecture, the cornice is the topmost element of the entablature, which consists (from top to bottom) of the cornice, the frieze, and the architrave.
Where a triangular pediment is above the entablature, the cornice continues all round the triangle, the two sides being "raking cornices". The vertical space below the cornice is typically decorated by dentils (little teeth), or the larger modillons. The soffit, or horizontal space under a projecting cornice, may be elaborately carved with vegetal designs.
A rake is an architectural term for an eave or cornice which runs along the gable of the roof of a modern residential structure. It may also be called a sloping cornice, a raking cornice. The trim and rafters at this edge are called rakes, rake board, rake fascia, verge-boards, barge-boards or verge- or barge-rafters.