Prenanthes purpurea vs rattlesnake root

Prenanthes purpurea and rattlesnake root both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prenanthes purpurea	Yes	No	No	No
rattlesnake root	Yes	No	No	No

As nouns, Prenanthes purpurea and rattlesnake root are synonyms defined as:

Prenanthes purpurea and rattlesnake root: herb of central and southern Europe having purple florets

Prenanthes purpurea (noun)	rattlesnake root (noun)
herb of central and southern Europe having purple florets	herb of central and southern Europe having purple florets
	a plant of the genus Nabalus