crinkleroot vs bittercress

crinkleroot and bittercress both are nouns.

Word	Noun	Adjective	Verb	Adverb
crinkleroot	Yes	No	No	No
bittercress	Yes	No	No	No

As nouns, bittercress is a hypernym of crinkleroot; that is, bittercress is a word with a broader meaning than crinkleroot:

crinkleroot: North American herb with pungent scaly or toothed roots
bittercress: any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic

Other hypernyms of crinkleroot include bitter cress.

crinkleroot (noun)	bittercress (noun)
North American herb with pungent scaly or toothed roots	any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic