diamondback rattlesnake vs diamondback

diamondback rattlesnake and diamondback both are nouns.

Word	Noun	Adjective	Verb	Adverb
diamondback rattlesnake	Yes	No	No	No
diamondback	Yes	No	No	No

As nouns, diamondback rattlesnake and diamondback are synonyms defined as:

diamondback rattlesnake and diamondback: large deadly rattlesnake with diamond-shaped markings

Other synonyms of diamondback rattlesnake include Crotalus adamanteus.

diamondback rattlesnake (noun)	diamondback (noun)
large deadly rattlesnake with diamond-shaped markings	large deadly rattlesnake with diamond-shaped markings