teat vs mamilla

teat and mamilla both are nouns.

Word	Noun	Adjective	Verb	Adverb
teat	Yes	No	No	No
mamilla	Yes	No	No	No

As nouns, teat and mamilla are synonyms defined as:

Other synonyms of teat include mammilla, nipple, pap, tit.

teat (noun)	mamilla (noun)
the small projection of a mammary gland	the small projection of a mammary gland