rockcress vs Barbarea vulgaris

rockcress and Barbarea vulgaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
rockcress	Yes	No	No	No
Barbarea vulgaris	Yes	No	No	No

As nouns, rockcress and Barbarea vulgaris are synonyms defined as:

rockcress and Barbarea vulgaris: noxious cress with yellow flowers; sometimes placed in genus Sisymbrium

Other synonyms of rockcress include rocket cress, Sisymbrium barbarea, yellow rocket.

rockcress (noun)	Barbarea vulgaris (noun)
any of several rock-loving cresses of the genus Arabis	noxious cress with yellow flowers; sometimes placed in genus Sisymbrium
noxious cress with yellow flowers; sometimes placed in genus Sisymbrium