window: opening to admit light or air

circle: simple curve of Euclidean geometry

rhombus: quadrilateral in which all sides have the same length

flower: sexual reproductive structure found on flowering plants

chalice: ecclesiastical drinking vessels for eucharistic wine having a stem, often with a central knop, and a foot

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

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