white lily vs white lotus

white lily and white lotus both are nouns.

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

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

white lily and white lotus: white Egyptian lotus: water lily of Egypt to southeastern Africa; held sacred by the Egyptians

Other synonyms of white lily include Egyptian water lily, lotus, Nymphaea lotus.

white lily (noun)	white lotus (noun)
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
white Egyptian lotus: water lily of Egypt to southeastern Africa; held sacred by the Egyptians