tit vs sideboob

tit and sideboob both are nouns.

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

As nouns, sideboob is a hyponym of tit; that is, sideboob is a word with a more specific, narrower meaning than tit:

tit: either of two soft fleshy milk-secreting glandular organs on the chest of a woman
sideboob: A breast exposed from the side

tit (noun)	sideboob (noun)
small insectivorous birds	A breast exposed from the side
either of two soft fleshy milk-secreting glandular organs on the chest of a woman
the small projection of a mammary gland