camas vs liliaceous plant

camas and liliaceous plant both are nouns.

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

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

camas (noun)	liliaceous plant (noun)
any of several plants of the genus Camassia; North and South America	plant growing from a bulb or corm or rhizome or tuber