peripety vs peripeteia

peripety and peripeteia both are nouns.

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

As nouns, peripety and peripeteia are synonyms defined as:

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

Other synonyms of peripety include peripetia.

peripety (noun)	peripeteia (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)