ceiling: overhead interior surface that covers the upper limit of a room

rhombus: quadrilateral in which all sides have the same length

circle: simple curve of Euclidean geometry

festoon: decoration of a wreath or garland hanging from two points

square: regular quadrilateral

angel: supernatural being or spirit in certain religions and mythologies

cartouche: oval with inscriptions

volute: spiral scroll-like ornament that forms the basis of the Ionic order

cornucopia: mythological symbol of abundance, also called the horn of plenty

Eye of Providence: symbol of all-seeing eye (usually shown in triangle and/or surrounded by rays of glory)