greaser vs taco

greaser and taco both are nouns.

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

As nouns, greaser and taco are synonyms defined as:

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

Other synonyms of greaser include wetback.

greaser (noun)	taco (noun)
(ethnic slur) offensive term for a person of Mexican descent	a tortilla rolled cupped around a filling
	(ethnic slur) offensive term for a person of Mexican descent