occasion vs occurrent

occasion and occurrent both are nouns.

Word	Noun	Adjective	Verb	Adverb
occasion	Yes	No	Yes	No
occurrent	Yes	Yes	No	No

As nouns, occurrent is a hypernym of occasion; that is, occurrent is a word with a broader meaning than occasion:

Other hypernyms of occasion include happening, natural event, occurrence.

occasion (noun)	occurrent (noun)
an event that occurs at a critical time	an event that happens
a formal or official social gathering or ceremony of people
a rational motive for a belief or action
an opportunity to do something
the time of a particular event

occasion (adjective)	occurrent (adjective)
	presently occurring (either causally or incidentally)

occasion (verb)	occurrent (verb)
give occasion to