Asia vs Asian country

Asia and Asian country both are nouns.

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

Asia (noun)	Asian country (noun)
the nations of the Asian continent collectively	any one of the nations occupying the Asian continent
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