uterus vs venter

uterus and venter both are nouns.

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

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

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

uterus (noun)	venter (noun)
a hollow muscular organ in the pelvic cavity of females; contains the developing fetus	the region of the body of a vertebrate between the thorax and the pelvis
	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