massasauga vs massasauga rattler

massasauga and massasauga rattler both are nouns.

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

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

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

Other synonyms of massasauga include Sistrurus catenatus.

massasauga (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
small pygmy rattlesnake