South America vs Argentina

South America and Argentina both are nouns.

Word	Noun	Adjective	Verb	Adverb
South America	Yes	No	No	No
Argentina	Yes	No	No	No

South America (noun)	Argentina (noun)
the nations of the South American continent collectively	type genus of the Argentinidae: argentines
a continent in the western hemisphere connected to North America by the Isthmus of Panama	a republic in southern South America; second largest country in South America