Crunch time and Point of no return

Crunch time noun - A time or state of affairs requiring prompt or decisive action.

Point of no return and crunch time are semantically related. In some cases you can use "Point of no return" instead a noun phrase "Crunch time".

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

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