Cardamine diphylla vs pepper root

Cardamine diphylla and pepper root both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cardamine diphylla	Yes	No	No	No
pepper root	Yes	No	No	No

As nouns, Cardamine diphylla and pepper root are synonyms defined as:

Cardamine diphylla and pepper root: North American herb with pungent scaly or toothed roots

Other synonyms of Cardamine diphylla include crinkle-root, crinkle root, crinkleroot, Dentaria diphylla, toothwort.

Cardamine diphylla (noun)	pepper root (noun)
North American herb with pungent scaly or toothed roots	North American herb with pungent scaly or toothed roots