chaos vs pandemonium

chaos and pandemonium both are nouns.

Word	Noun	Adjective	Verb	Adverb
chaos	Yes	No	No	No
pandemonium	Yes	No	No	No

As nouns, chaos and pandemonium are synonyms defined as:

Other synonyms of chaos include bedlam, topsy-turvydom, topsy-turvyness.

chaos (noun)	pandemonium (noun)
(physics) a dynamical system that is extremely sensitive to its initial conditions	a state of extreme confusion and disorder
the formless and disordered state of matter before the creation of the cosmos
a state of extreme confusion and disorder