Safety plug and Safety valve

Safety valve and safety plug are semantically related. in security guarantee topic. In some cases you can use "Safety valve" instead a noun phrase "Safety plug".

Safety 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.

Safety plug and safety valve are semantically related. You can use "Safety plug" instead a noun phrase "Safety valve".