death camas vs liliaceous plant

death camas and liliaceous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
death camas	Yes	No	No	No
liliaceous plant	Yes	No	No	No

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

death camas: 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

death camas (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