venter vs uterus

venter and uterus both are nouns.

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

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

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

Other hypernyms of venter include womb.

venter (noun)	uterus (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