cress vs crucifer

cress and crucifer both are nouns.

Word	Noun	Adjective	Verb	Adverb
cress	Yes	No	No	No
crucifer	Yes	No	No	No

As nouns, crucifer is a hypernym of cress; that is, crucifer 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
crucifer: any of various plants of the family Cruciferae

Other hypernyms of cress include cruciferous plant.

cress (noun)	crucifer (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