Fair Use:Fair use is a legal doctrine that allows the use of copyrighted material without permission from the copyright holder under certain circumstances, such as for purposes of criticism, comment, news reporting, teaching, scholarship, or research.
Derivative Work:A derivative work is a work based upon one or more preexisting works, such as a translation, musical arrangement, dramatization, fictionalization, motion picture version, sound recording, art reproduction, abridgment, condensation, or any other form in which a work may be recast, transformed, or adapted.
Parody:Parody is a form of transformative use that involves the use of a copyrighted work in a new and different way, such as for the purpose of commentary, criticism, or humor.