Asia vs South Korea

Asia and South Korea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Asia	Yes	No	No	No
South Korea	Yes	No	No	No

Asia (noun)	South Korea (noun)
the nations of the Asian continent collectively	a republic in the southern half of the Korean Peninsula; established in 1948
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