subsequently vs later on

subsequently and later on both are adverbs.

Word	Noun	Adjective	Verb	Adverb
subsequently	No	No	No	Yes
later on	No	No	No	Yes

As adverbs, subsequently and later on are synonyms defined as:

subsequently and later on: happening at a time subsequent to a reference time

Other synonyms of subsequently include after, afterward, afterwards, later.

subsequently (adverb)	later on (adverb)
happening at a time subsequent to a reference time	happening at a time subsequent to a reference time