posteriority vs subsequence

posteriority and subsequence both are nouns.

Word	Noun	Adjective	Verb	Adverb
posteriority	Yes	No	No	No
subsequence	Yes	No	No	No

As nouns, posteriority and subsequence are synonyms defined as:

Other synonyms of posteriority include subsequentness.

posteriority (noun)	subsequence (noun)
the quality of being toward the back or toward the rear end	following in time
following in time	something that follows something else