Peripeteia and Point of no return

Peripeteia noun - A sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work).

Point of no return and peripeteia are semantically related. in critical juncture topic. In some cases you can use "Point of no return" instead a noun "Peripeteia".

Point of no return noun - A line that when crossed permits of no return and typically results in irrevocable commitment.

Peripeteia and point of no return are semantically related. Sometimes you can use "Peripeteia" instead a noun phrase "Point of no return".