pilot blacksnake vs blacksnake

pilot blacksnake and blacksnake both are nouns.

Word	Noun	Adjective	Verb	Adverb
pilot blacksnake	Yes	No	No	No
blacksnake	Yes	No	No	No

As nouns, pilot blacksnake and blacksnake are synonyms defined as:

pilot blacksnake and blacksnake: large harmless shiny black North American snake

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

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