greaser vs wetback

greaser and wetback both are nouns.

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

As nouns, greaser and wetback are synonyms defined as:

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

Other synonyms of greaser include taco.

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