Sistrurus catenatus vs massasauga rattler

Sistrurus catenatus and massasauga rattler both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sistrurus catenatus	Yes	No	No	No
massasauga rattler	Yes	No	No	No

As nouns, Sistrurus catenatus and massasauga rattler are synonyms defined as:

Sistrurus catenatus and massasauga rattler: pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians

Other synonyms of Sistrurus catenatus include massasauga.

Sistrurus catenatus (noun)	massasauga rattler (noun)
pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians	pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians