subsequentness vs subsequence

subsequentness and subsequence both are nouns.

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

As nouns, subsequentness and subsequence are synonyms defined as:

Other synonyms of subsequentness include posteriority.

subsequentness (noun)	subsequence (noun)
following in time	following in time
	something that follows something else