antecedence vs anteriority

antecedence and anteriority both are nouns.

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

As nouns, antecedence and anteriority are synonyms defined as:

Other synonyms of antecedence include antecedency, precedence, precedency, priority.

antecedence (noun)	anteriority (noun)
preceding in time	the quality of being in front or (in lower animals) toward the head
	preceding in time