auntie vs aunty

auntie and aunty both are nouns.

Word	Noun	Adjective	Verb	Adverb
auntie	Yes	No	No	No
aunty	Yes	No	No	No

As nouns, auntie and aunty are synonyms defined as:

auntie and aunty: the sister of your father or mother; the wife of your uncle

Other synonyms of auntie include aunt.

auntie (noun)	aunty (noun)
the sister of your father or mother; the wife of your uncle	the sister of your father or mother; the wife of your uncle