contingence vs occurrence

contingence and occurrence both are nouns.

Word	Noun	Adjective	Verb	Adverb
contingence	Yes	No	No	No
occurrence	Yes	No	No	No

As nouns, occurrence is a hypernym of contingence; that is, occurrence is a word with a broader meaning than contingence:

Other hypernyms of contingence include happening, natural event, occurrent.

contingence (noun)	occurrence (noun)
a possible event or occurrence or result	an event that happens
	an instance of something occurring