yellow watercress vs Rorippa islandica

yellow watercress and Rorippa islandica both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow watercress	Yes	No	No	No
Rorippa islandica	Yes	No	No	No

As nouns, yellow watercress and Rorippa islandica are synonyms defined as:

yellow watercress and Rorippa islandica: annual or biennial cress growing in damp places sometimes used in salads or as a potherb; troublesome weed in some localities

Other synonyms of yellow watercress include marsh cress.

yellow watercress (noun)	Rorippa islandica (noun)
annual or biennial cress growing in damp places sometimes used in salads or as a potherb; troublesome weed in some localities	annual or biennial cress growing in damp places sometimes used in salads or as a potherb; troublesome weed in some localities