massasauga vs Sistrurus catenatus

massasauga and Sistrurus catenatus both are nouns.

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

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

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

Other synonyms of massasauga include massasauga rattler.

massasauga (noun)	Sistrurus catenatus (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
small pygmy rattlesnake