rocket cress vs rockcress

rocket cress and rockcress both are nouns.

Word	Noun	Adjective	Verb	Adverb
rocket cress	Yes	No	No	No
rockcress	Yes	No	No	No

As nouns, rocket cress and rockcress are synonyms defined as:

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

Other synonyms of rocket cress include Barbarea vulgaris, Sisymbrium barbarea, yellow rocket.

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