antecedent vs temporal relation

antecedent and temporal relation both are nouns.

Word	Noun	Adjective	Verb	Adverb
antecedent	Yes	Yes	No	No
temporal relation	Yes	No	No	No

As nouns, temporal relation is a hypernym of antecedent; that is, temporal relation is a word with a broader meaning than antecedent:

antecedent (noun)	temporal relation (noun)
the referent of an anaphor; a phrase or clause that is referred to by an anaphoric pronoun	a relation involving time
a preceding occurrence or cause or event
someone from whom you are descended (but usually more remote than a grandparent)
anything that precedes something similar in time

antecedent (adjective)	temporal relation (adjective)
preceding in time or order