Asian vs Asia

Asian and Asia both are nouns.

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

Asian (noun)	Asia (noun)
a native or inhabitant of Asia	the nations of the Asian continent collectively
	the largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations

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