Bench mark and Reference point

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

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

Reference point noun - An indicator that orients you generally.

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