zigadene vs liliaceous plant

zigadene and liliaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
zigadene	Yes	No	No	No
liliaceous plant	Yes	No	No	No

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

zigadene: any of various plants of the genus Zigadenus having glaucous leaves and terminal racemes of mostly white flowers; all are poisonous
liliaceous plant: plant growing from a bulb or corm or rhizome or tuber

zigadene (noun)	liliaceous plant (noun)
any of various plants of the genus Zigadenus having glaucous leaves and terminal racemes of mostly white flowers; all are poisonous	plant growing from a bulb or corm or rhizome or tuber