wetback vs greaser

wetback and greaser both are nouns.

Word	Noun	Adjective	Verb	Adverb
wetback	Yes	No	No	No
greaser	Yes	No	No	No

As nouns, wetback and greaser are synonyms defined as:

wetback and greaser: (ethnic slur) offensive term for a person of Mexican descent

Other synonyms of wetback include taco.

wetback (noun)	greaser (noun)
(ethnic slur) offensive term for a person of Mexican descent	(ethnic slur) offensive term for a person of Mexican descent