Coving, also known as crown molding or cornice molding, is a decorative element used in interior design to enhance the transition between walls and ceilings. Typically made from plaster, wood, or other materials, coving is installed in a concave, curved, or stepped shape, adding an elegant and finished look to a room.

Coving serves both aesthetic and architectural purposes. It softens the sharp angle between walls and ceilings, creating a visually pleasing transition. 

In summary, coving is a decorative molding that contributes to the overall aesthetic appeal of interior spaces, providing a refined and timeless finishing touch to walls and ceilings.