ALLUSION , ALLEGORY

Allusion: a reference in one literary work to a character or theme found in another literary work.

EX: simon in the clearing is like adam and eve in the garden of eden when the lord of the flies shows up it is like the snake tempting simon like eve in the garden of eden.
Allegory:a story in which the characters, setting, and events stand for abstract or moral concepts.

EX: the main allegory in lord of the flies is that without civilization, savagery takes over.