trillium vs liliaceous plant

trillium and liliaceous plant both are nouns.

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

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

trillium: any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower
liliaceous plant: plant growing from a bulb or corm or rhizome or tuber

trillium (noun)	liliaceous plant (noun)
any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower	plant growing from a bulb or corm or rhizome or tuber