Asian country vs Japan

Asian country and Japan both are nouns.

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

Asian country (noun)	Japan (noun)
any one of the nations occupying the Asian continent	a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building
	a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean