What are the differences and similarities among representational abstract and nonobjective art?

Representational art depicts recognizable subjects from the real world, while abstract art distorts or simplifies these subjects, focusing more on form, color, and composition than on literal representation. Nonobjective art, on the other hand, does not reference anything outside itself, relying solely on visual elements to convey meaning. The similarities among the three lie in their use of color, shape, and line to express emotions or ideas, but they differ fundamentally in their relationship to the external world and subject matter.