coralwort vs bittercress

coralwort and bittercress both are nouns.

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

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

coralwort: European bittercress having a knotted white rootstock
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 coralwort include bitter cress.

coralwort (noun)	bittercress (noun)
European bittercress having a knotted white rootstock	any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic