Bench mark and Par

Bench mark noun - A surveyor's mark on a permanent object of predetermined position and elevation used as a reference point.

Par and bench mark are semantically related. In some cases you can use "Par" instead a noun phrase "Bench mark".

Par noun - Something set up as an example against which others of the same type are compared.

Bench mark and par are semantically related. Sometimes you can use "Bench mark" instead a noun "Par".