broccoli vs crucifer

broccoli and crucifer both are nouns.

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

As nouns, crucifer is a hypernym of broccoli; that is, crucifer is a word with a broader meaning than broccoli:

Other hypernyms of broccoli include cruciferous plant.

broccoli (noun)	crucifer (noun)
branched green undeveloped flower heads	any of various plants of the family Cruciferae
plant with dense clusters of tight green flower buds