To Umpire, or to Referee???

[Gandalf Beckwith]

An appeal to the great and the good of PH - from Mrs GB.....

Yesterday my dearly beloved asked me a killer question.

"Why is it that some sports have a Referee, and some and Umpire?"

Whilst I was deep in thought trying to make something up that sounded credible, she said the me "This is a Pistonheads question, isn't it?"

So, over to you, the intellectual powerhouse that is PH. Satisfy Mrs GB's curiosity (steady you lot!!), and lets see what you've got.....

[Dracoro]

In context of team sports, I always remembered it as follows:
1 main official/decision maker - referees.
2 decision makers (equal powers etc.) - umpires.

So football and rugby have referees (1 main official)
Hockey and Cricket have umpires (2 main officials)

Been discussed before and I can't remember if there's a "rule" about umpires/referees. Some sports have both (Tennis for example).