crucifer vs herbaceous plant

crucifer and herbaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
crucifer	Yes	No	No	No
herbaceous plant	Yes	No	No	No

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

crucifer: any of various plants of the family Cruciferae
herbaceous plant: a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

Other hypernyms of crucifer include herb.

crucifer (noun)	herbaceous plant (noun)
any of various plants of the family Cruciferae	a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests