devil nettle vs Cnidoscolus urens

devil nettle and Cnidoscolus urens both are nouns.

Word	Noun	Adjective	Verb	Adverb
devil nettle	Yes	No	No	No
Cnidoscolus urens	Yes	No	No	No

As nouns, devil nettle and Cnidoscolus urens are synonyms defined as:

Other synonyms of devil nettle include Jatropha stimulosus, Jatropha urens, pica-pica, spurge nettle, tread-softly.

devil nettle (noun)	Cnidoscolus urens (noun)
a stinging herb of tropical America	a stinging herb of tropical America