venter vs womb

venter and womb both are nouns.

Word	Noun	Adjective	Verb	Adverb
venter	Yes	No	No	No
womb	Yes	No	No	No

As nouns, womb is a hypernym of venter; that is, womb is a word with a broader meaning than venter:

venter: the womb
womb: a hollow muscular organ in the pelvic cavity of females; contains the developing fetus

Other hypernyms of venter include uterus.

venter (noun)	womb (noun)
the region of the body of a vertebrate between the thorax and the pelvis	a hollow muscular organ in the pelvic cavity of females; contains the developing fetus
a bulging body part (as the belly of a muscle)
the womb
a speaker who expresses or gives vent to a personal opinion or grievance