fortuity vs chance event

fortuity and chance event both are nouns.

Word	Noun	Adjective	Verb	Adverb
fortuity	Yes	No	No	No
chance event	Yes	No	No	No

As nouns, fortuity and chance event are synonyms defined as:

fortuity and chance event: anything that happens suddenly or by chance without an apparent cause

Other synonyms of fortuity include accident, stroke.

fortuity (noun)	chance event (noun)
anything that happens suddenly or by chance without an apparent cause	anything that happens suddenly or by chance without an apparent cause