Motorcycle policeman and Police officer

Motorcycle policeman noun - A policeman who rides a motorcycle (and who checks the speeds of motorists).

Police officer and motorcycle policeman are semantically related. In some cases you can use "Police officer" instead a noun phrase "Motorcycle policeman".

Police officer noun - A member of a force charged with law enforcement at the local level.

Motorcycle policeman and police officer are semantically related. Sometimes you can replace phrase "Motorcycle policeman" with "Police officer", this phrases are similar.