CA meaning in Community ?

Concept art is a form of visual art used to convey an idea for use in films, video games, animation, comic books, or other media before it is put into the final product. Concept art usually refers to world-building artwork used to inspire the development of media products, and is not the same as visual development art, though they are often confused.

Concept art is developed through several iterations. Multiple solutions are explored before settling on the final design. Concept art is not only used to develop the work, but also to show the project's progress to directors, clients and investors. Once the development of the work is complete, concept art may be reworked and used for advertising materials.