Limit and Zero hour

Limit noun - A real or imaginary point beyond which a person or thing cannot go.

Zero hour and limit are semantically related. In some cases you can use "Zero hour" instead a noun "Limit".

Nearby Words: limited, limitation, limitless, limitary, limiting

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

Limit and zero hour are semantically related. Sometimes you can use "Limit" instead a noun phrase "Zero hour".