anteriority vs anterior

anteriority and anterior both are nouns.

Word	Noun	Adjective	Verb	Adverb
anteriority	Yes	No	No	No
anterior	Yes	Yes	No	No

anteriority (noun)	anterior (noun)
the quality of being in front or (in lower animals) toward the head	a tooth situated at the front of the mouth
preceding in time

anteriority (adjective)	anterior (adjective)
	of or near the head end or toward the front plane of a body
	earlier in time