peripetia vs peripety

peripetia and peripety both are nouns.

Word	Noun	Adjective	Verb	Adverb
peripetia	Yes	No	No	No
peripety	Yes	No	No	No

As nouns, peripetia and peripety are synonyms defined as:

peripetia and peripety: a sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work)

Other synonyms of peripetia include peripeteia.

peripetia (noun)	peripety (noun)
a sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work)	a sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work)