Means of escape and Relief valve

Relief valve and means of escape are semantically related in release for something at dangerous level topic. In some cases you can use "Relief valve" instead a noun phrase "Means of escape".

Relief valve noun - A valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level.

Means of escape and relief valve are semantically related in release for something at dangerous level topic. You can use "Means of escape" instead a noun phrase "Relief valve".