Central America vs El Salvador

Central America and El Salvador both are nouns.

Word	Noun	Adjective	Verb	Adverb
Central America	Yes	No	No	No
El Salvador	Yes	No	No	No

Central America (noun)	El Salvador (noun)
the nations of Central America collectively	a republic on the Pacific coast of Central America
the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia