wood lily vs lily

wood lily and lily both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood lily	Yes	No	No	No
lily	Yes	No	No	No

As nouns, lily is a hypernym of wood lily; that is, lily is a word with a broader meaning than wood lily:

wood lily: lily of eastern North America having orange to orange-red purple-spotted flowers
lily: any liliaceous plant of the genus Lilium having showy pendulous flowers

wood lily (noun)	lily (noun)
lily of eastern North America having orange to orange-red purple-spotted flowers	any liliaceous plant of the genus Lilium having showy pendulous flowers
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