Collage Techniques and Terminology
Things you've probably been doing already without knowing that there was a really fancy term for them.
Aleatoric - art which exploits the principle of randomness; the creation of art by chance. The word derives from the Latin word alea, the rolling of Dice.
Assemblage - a form of sculpture comprised of "found" objects arranged in such a way that they create a piece. Assemblage is "supposed"; to be three-dimensional and different from collage, which is "supposed" to be two-dimensional (though both are similarly eclectic in nature and composition).
Bricolage - something made or put together using whatever materials happen to be available.
Chiasmage - consistent destruction of the primary motifs. The structures of various types of print, of music sheets, letters, geographic and star maps, chessboards or photographs are torn to little pieces and then put together again and glued to a base.
Collage - both an artwork