massasauga vs ground rattler

massasauga and ground rattler both are nouns.

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

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

Other synonyms of massasauga include Sistrurus miliaris.

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