lily vs meadow lily

lily and meadow lily both are nouns.

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

As nouns, meadow lily is a hyponym of lily; that is, meadow lily is a word with a more specific, narrower meaning than lily:

lily: any liliaceous plant of the genus Lilium having showy pendulous flowers
meadow lily: common lily of the eastern United States having nodding yellow or reddish flowers spotted with brown

lily (noun)	meadow lily (noun)
any liliaceous plant of the genus Lilium having showy pendulous flowers	common lily of the eastern United States having nodding yellow or reddish flowers spotted with brown