Odocoileus Virginianus vs deer

Odocoileus Virginianus and deer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Odocoileus Virginianus	Yes	No	No	No
deer	Yes	No	No	No

As nouns, deer is a hypernym of Odocoileus Virginianus; that is, deer is a word with a broader meaning than Odocoileus Virginianus:

Odocoileus Virginianus: common North American deer; tail has a white underside
deer: distinguished from Bovidae by the male's having solid deciduous antlers

Other hypernyms of Odocoileus Virginianus include cervid.

Odocoileus Virginianus (noun)	deer (noun)
common North American deer; tail has a white underside	distinguished from Bovidae by the male's having solid deciduous antlers