Aft and Back end

Aft adjective - Being at or in the part of something opposite the front part.

Back end and aft are semantically related In some cases you can use "Back end" instead the word "Aft" as a noun or an adjective.

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

Aft and back end are semantically related in back topic. You can use "Aft" instead the phrase "Back end" as a noun or an adjective, if it concerns topics such as end part.