boob vs titty

boob and titty both are nouns.

Word	Noun	Adjective	Verb	Adverb
boob	Yes	No	Yes	No
titty	Yes	No	No	No

As nouns, boob and titty are synonyms defined as:

boob and titty: either of two soft fleshy milk-secreting glandular organs on the chest of a woman

Other synonyms of boob include bosom, breast, knocker, tit.

boob (noun)	titty (noun)
either of two soft fleshy milk-secreting glandular organs on the chest of a woman	either of two soft fleshy milk-secreting glandular organs on the chest of a woman
an ignorant or foolish person

boob (verb)	titty (verb)
commit a faux pas or a fault or make a serious mistake