Bench mark and Reference mark

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

Reference mark and bench mark are semantically related in point of reference topic. In some cases you can use "Reference mark" instead a noun phrase "Bench mark".

Bench mark and reference mark are semantically related in point of reference topic. You can use "Bench mark" instead a noun phrase "Reference mark".