Masticophis flagellum vs coachwhip

Masticophis flagellum and coachwhip both are nouns.

Word	Noun	Adjective	Verb	Adverb
Masticophis flagellum	Yes	No	No	No
coachwhip	Yes	No	No	No

As nouns, Masticophis flagellum and coachwhip are synonyms defined as:

Masticophis flagellum and coachwhip: a whipsnake of southern United States and Mexico; tail resembles a braided whip

Other synonyms of Masticophis flagellum include coachwhip snake.

Masticophis flagellum (noun)	coachwhip (noun)
a whipsnake of southern United States and Mexico; tail resembles a braided whip	a whipsnake of southern United States and Mexico; tail resembles a braided whip
	desert shrub of southwestern United States and Mexico having slender naked spiny branches that after the rainy season put forth foliage and clusters of red flowers