antecedence vs precedence

antecedence and precedence both are nouns.

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

As nouns, antecedence and precedence are synonyms defined as:

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

antecedence (noun)	precedence (noun)
preceding in time	the act of preceding in time or order or rank (as in a ceremony)
	preceding in time
	status established in order of importance or urgency