blacksnake vs Elaphe obsoleta

blacksnake and Elaphe obsoleta both are nouns.

Word	Noun	Adjective	Verb	Adverb
blacksnake	Yes	No	No	No
Elaphe obsoleta	Yes	No	No	No

As nouns, blacksnake and Elaphe obsoleta are synonyms defined as:

blacksnake and Elaphe obsoleta: large harmless shiny black North American snake

Other synonyms of blacksnake include black rat snake, mountain blacksnake, pilot blacksnake.

blacksnake (noun)	Elaphe obsoleta (noun)
blackish racer of the eastern United States that grows to six feet	large harmless shiny black North American snake
large harmless shiny black North American snake