Asian vs denizen

Asian and denizen both are nouns.

Word	Noun	Adjective	Verb	Adverb
Asian	Yes	Yes	No	No
denizen	Yes	No	No	No

As nouns, denizen is a hypernym of Asian; that is, denizen is a word with a broader meaning than Asian:

Other hypernyms of Asian include dweller, habitant, indweller, inhabitant, person of color, person of colour.

Asian (noun)	denizen (noun)
a native or inhabitant of Asia	a plant or animal naturalized in a region
	a person who inhabits a particular place

Asian (adjective)	denizen (adjective)
of or relating to or characteristic of Asia or the peoples of Asia or their languages or culture