Back end and Postern

Back end noun - The side of an object that is opposite its front.

Postern and back end are semantically related in back or end part topic. In some cases you can use "Postern" instead the phrase "Back end" as a noun or an adjective.

Postern noun - A small gate in the rear of a fort or castle.

Back end and postern are semantically related in back topic. You can use "Back end" instead the word "Postern" as an adjective or a noun.