labyrinthine vs labyrinth

labyrinthine is not a noun while labyrinth is a noun.

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

labyrinthine (noun)	labyrinth (noun)
	complex system of paths or tunnels in which it is easy to get lost
	a complex system of interconnecting cavities; concerned with hearing and equilibrium

labyrinthine (adjective)	labyrinth (adjective)
relating to or affecting or originating in the inner ear
resembling a labyrinth in form or complexity
highly complex or intricate and occasionally devious