Point of no return and Showdown

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

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

Showdown noun - A hostile disagreement face-to-face.

Point of no return and showdown are semantically related. Sometimes you can use "Point of no return" instead a noun "Showdown".