massasauga vs rattler

massasauga and rattler both are nouns.

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

As nouns, rattler is a hypernym of massasauga; that is, rattler is a word with a broader meaning than massasauga:

massasauga: pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians
rattler: pit viper with horny segments at the end of the tail that rattle when shaken

Other hypernyms of massasauga include rattlesnake.

As nouns, rattler is a hypernym of massasauga; that is, rattler is a word with a broader meaning than massasauga:

massasauga: small pygmy rattlesnake
rattler: pit viper with horny segments at the end of the tail that rattle when shaken

Other hypernyms of massasauga include rattlesnake.

massasauga (noun)	rattler (noun)
pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians	pit viper with horny segments at the end of the tail that rattle when shaken
small pygmy rattlesnake	a railroad train consisting of freight cars