Salvador vs El Salvador

Salvador and El Salvador both are nouns.

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

As nouns, Salvador and El Salvador are synonyms defined as:

Salvador and El Salvador: a republic on the Pacific coast of Central America

Other synonyms of Salvador include Republic of El Salvador.

Salvador (noun)	El Salvador (noun)
a republic on the Pacific coast of Central America	a republic on the Pacific coast of Central America