Odocoileus hemionus columbianus vs black-tailed deer

Odocoileus hemionus columbianus and black-tailed deer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Odocoileus hemionus columbianus	Yes	No	No	No
black-tailed deer	Yes	No	No	No

As nouns, Odocoileus hemionus columbianus and black-tailed deer are synonyms defined as:

Odocoileus hemionus columbianus and black-tailed deer: mule deer of western Rocky Mountains

Other synonyms of Odocoileus hemionus columbianus include blacktail, blacktail deer.

Odocoileus hemionus columbianus (noun)	black-tailed deer (noun)
mule deer of western Rocky Mountains	mule deer of western Rocky Mountains