ventral vs venter

ventral is not a noun while venter is a noun.

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

ventral (noun)	venter (noun)
	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

ventral (adjective)	venter (adjective)
toward or on or near the belly (front of a primate or lower surface of a lower animal)
nearest to or facing toward the axis of an organ or organism