Ombudsman and Referee

Ombudsman noun - A government appointee who investigates complaints by private persons against the government.

Referee and ombudsman are semantically related. in person who arbitrates topic. In some cases you can use "Referee" instead a noun "Ombudsman".

Referee noun - A person who impartially decides or resolves a dispute or controversy.

Ombudsman and referee are semantically related. You can use "Ombudsman" instead a noun "Referee".