High noon and Point of no return

High noon noun - A state or time of great activity, thriving, or achievement.

Point of no return and high noon are semantically related. In some cases you can use "Point of no return" instead a noun phrase "High noon".

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

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