Curvilinear- adjective definition: contained by or consisting of a curved line(s).sentence: Some roof companies will recommend curvilinear roofs instead of straight line roofs.
Form- noun definition: the visible shape or configuration of an object or thing sentence: The form of the ball if round and circular, while the form of the block is square and rectangular.
(this is what i put on edge) Curvilinear lines are lines that slowly change direction. Form in art is the shape that an object has. An example of curvilienar is "My baseball bat has curvilinear lines" and an example of Form is "that car has a strange form".