tit vs mamma

tit and mamma both are nouns.

Word	Noun	Adjective	Verb	Adverb
tit	Yes	No	No	No
mamma	Yes	No	No	No

As nouns, mamma is a hypernym of tit; that is, mamma is a word with a broader meaning than tit:

tit: either of two soft fleshy milk-secreting glandular organs on the chest of a woman
mamma: milk-secreting organ of female mammals

Other hypernyms of tit include mammary gland.

tit (noun)	mamma (noun)
small insectivorous birds	milk-secreting organ of female mammals
either of two soft fleshy milk-secreting glandular organs on the chest of a woman	informal terms for a mother
the small projection of a mammary gland