Cardamine rotundifolia vs American watercress

Cardamine rotundifolia and American watercress both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cardamine rotundifolia	Yes	No	No	No
American watercress	Yes	No	No	No

As nouns, Cardamine rotundifolia and American watercress are synonyms defined as:

Cardamine rotundifolia and American watercress: mat-forming perennial found in cold springs of the eastern United States

Other synonyms of Cardamine rotundifolia include mountain watercress.

Cardamine rotundifolia (noun)	American watercress (noun)
mat-forming perennial found in cold springs of the eastern United States	mat-forming perennial found in cold springs of the eastern United States
	of southwestern Europe; cultivated in Florida