Referee and Ump

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

Ump and referee are semantically related in decide topic. In some cases you can use "Ump" instead the word "Referee" as a noun or a verb.

Ump noun - An official at a baseball game.

Referee and ump are semantically related in judge topic. You can use "Referee" instead the word "Ump" as a noun or a verb, if it concerns topics such as decide.