white lily vs Annunciation lily

white lily and Annunciation lily both are nouns.

Word	Noun	Adjective	Verb	Adverb
white lily	Yes	No	No	No
Annunciation lily	Yes	No	No	No

As nouns, white lily and Annunciation lily are synonyms defined as:

white lily and Annunciation lily: lily of eastern Mediterranean and the Balkans with broad funnel-shaped white flowers

Other synonyms of white lily include Lent lily, Lilium candidum, Madonna lily.

white lily (noun)	Annunciation lily (noun)
lily of eastern Mediterranean and the Balkans with broad funnel-shaped white flowers	lily of eastern Mediterranean and the Balkans with broad funnel-shaped white flowers
white Egyptian lotus: water lily of Egypt to southeastern Africa; held sacred by the Egyptians