Motorcycle policeman and Policeman

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

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

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

Motorcycle policeman and policeman are semantically related. Sometimes you can replace phrase "Motorcycle policeman" with "Policeman", this terms are similar.