Fantasy - 1. Imagination or fancy; especially : the free play of creative imagination as it affects perception and productivity usually as expressed in an art form or as elicited by projective techniques of formal psychology 2. The power or process of creating mental images (as of unrealistic or improbable happenings or distortions of previously perceived persons, objects, or events) especially with erotic content or implication in response to psychological need or through the action of drugs or illness 3. The act or function of forming images or representations whether in direct perception or in memory (this definition is considered obsolete)

Surrealism - The principles, ideals, or practice of producing fantastic or incongruous imagery in art or literature by means of unnatural juxtapositions and combinations

Prank - To play tricks maliciously; a ludicrous or mildly mischievous act

Simulation - Willful deception; one that shows a superficial resemblance;

Bricolage - Construction (as of a sculpture or a structure of ideas) achieved by using whatever comes to hand; also : something constructed in this way

This collection of words comes from an essay by CalArts Educator Lorrainne Wild in The Education of the Graphic Designer, p44. The definitions come from Mirriam Webster