pepper root vs crinkle-root

pepper root and crinkle-root both are nouns.

Word	Noun	Adjective	Verb	Adverb
pepper root	Yes	No	No	No
crinkle-root	Yes	No	No	No

As nouns, pepper root and crinkle-root are synonyms defined as:

pepper root and crinkle-root: North American herb with pungent scaly or toothed roots

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

pepper root (noun)	crinkle-root (noun)
North American herb with pungent scaly or toothed roots	North American herb with pungent scaly or toothed roots