cress vs cruciferous plant

cress and cruciferous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
cress	Yes	No	No	No
cruciferous plant	Yes	No	No	No

As nouns, cruciferous plant is a hypernym of cress; that is, cruciferous plant is a word with a broader meaning than cress:

cress: any of various plants of the family Cruciferae with edible leaves that have a pungent taste
cruciferous plant: any of various plants of the family Cruciferae

Other hypernyms of cress include crucifer.

cress (noun)	cruciferous plant (noun)
pungent leaves of any of numerous cruciferous herbs	any of various plants of the family Cruciferae
any of various plants of the family Cruciferae with edible leaves that have a pungent taste