Borat Sister wrote:
What’s th seee difference between a deer and an elk, Bill?
Moose, elk and deer are all three "deer". They are all three different branches of the deer family. Moose (also known as an Elk) and Elk are bigger than deer. Roberta's deer (Irish Elk) above is as big as or bigger than an elk, but hasn't existed during recorded history. The Irish Elk was also know as the Irish Deer or Giant Deer. It is closely related to Fallow Deer.
It kinda get confusing when getting away from general speaking!
So, for an answer to your question - nothing, they are all three "true deer".