grits vs hominy grits

grits and hominy grits both are nouns.

Word	Noun	Adjective	Verb	Adverb
grits	Yes	No	No	No
hominy grits	Yes	No	No	No

As nouns, grits and hominy grits are synonyms defined as:

grits and hominy grits: coarsely ground hulled corn boiled as a breakfast dish in the southern United States

grits (noun)	hominy grits (noun)
coarsely ground hulled corn boiled as a breakfast dish in the southern United States	coarsely ground hulled corn boiled as a breakfast dish in the southern United States