blacksnake vs Coluber constrictor

blacksnake and Coluber constrictor both are nouns.

Word	Noun	Adjective	Verb	Adverb
blacksnake	Yes	No	No	No
Coluber constrictor	Yes	No	No	No

As nouns, blacksnake and Coluber constrictor are synonyms defined as:

blacksnake and Coluber constrictor: blackish racer of the eastern United States that grows to six feet

Other synonyms of blacksnake include black racer.

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