pap vs mammilla

pap and mammilla both are nouns.

Word	Noun	Adjective	Verb	Adverb
pap	Yes	No	No	No
mammilla	Yes	No	No	No

As nouns, pap and mammilla are synonyms defined as:

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

pap (noun)	mammilla (noun)
the small projection of a mammary gland	the small projection of a mammary gland
worthless or oversimplified ideas
a diet that does not require chewing; advised for those with intestinal disorders