labyrinthine vs complex

labyrinthine is not a noun while complex is a noun.

Word	Noun	Adjective	Verb	Adverb
labyrinthine	No	Yes	No	No
complex	Yes	Yes	No	No

labyrinthine (noun)	complex (noun)
	a whole structure (as a building) made up of interconnected or related structures
	a conceptual whole made up of complicated and related parts
	(psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
	a compound described in terms of the central atom to which other atoms are bound or coordinated

labyrinthine (adjective)	complex (adjective)
relating to or affecting or originating in the inner ear	complicated in structure; consisting of interconnected parts
resembling a labyrinth in form or complexity	difficult to analyze or understand
highly complex or intricate and occasionally devious