whitetail vs whitetail deer

whitetail and whitetail deer both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitetail	Yes	No	No	No
whitetail deer	Yes	No	No	No

As nouns, whitetail and whitetail deer are synonyms defined as:

whitetail and whitetail deer: common North American deer; tail has a white underside

Other synonyms of whitetail include Odocoileus Virginianus, Virginia deer, white-tailed deer, white tail.

whitetail (noun)	whitetail deer (noun)
common North American deer; tail has a white underside	common North American deer; tail has a white underside