Difference between Hart and Deer

Hart

Part of speech: noun

Definition: A male deer, especially the male of the red deer after its fifth year.

Example sentence: When I was growing up, I remember my uncle Bret 'Hitman' Hart having his own column in the Calgary Sun. To me, this was beyond cool.

Deer

Part of speech: noun

Definition: a ruminant mammal with antlers and hooves of the family Cervidae or one of several similar animals from related families of the order ArtiodactylaThe meat of such an animalAny animal, especially a mammal.