Central American nation vs El Salvador

Central American nation and El Salvador both are nouns.

Word	Noun	Adjective	Verb	Adverb
Central American nation	Yes	No	No	No
El Salvador	Yes	No	No	No

Central American nation (noun)	El Salvador (noun)
any one of the countries occupying Central America; these countries (except for Belize and Costa Rica) are characterized by low per capita income and unstable governments	a republic on the Pacific coast of Central America