Bush telegraph and Old boy network

Old boy network and bush telegraph are semantically related. In some cases you can use "Old boy network" instead a noun phrase "Bush telegraph".

Old boy network noun - An exclusive informal network linking members of a social class or profession or organization in order to provide connections and information and favors (especially in business or politics).

Bush telegraph and old boy network are semantically related. You can use "Bush telegraph" instead a noun phrase "Old boy network".