Odocoileus hemionus columbianus vs blacktail deer

Odocoileus hemionus columbianus and blacktail deer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Odocoileus hemionus columbianus	Yes	No	No	No
blacktail deer	Yes	No	No	No

As nouns, Odocoileus hemionus columbianus and blacktail deer are synonyms defined as:

Odocoileus hemionus columbianus and blacktail deer: mule deer of western Rocky Mountains

Other synonyms of Odocoileus hemionus columbianus include black-tailed deer, blacktail.

Odocoileus hemionus columbianus (noun)	blacktail deer (noun)
mule deer of western Rocky Mountains	mule deer of western Rocky Mountains