swamp lily vs water dragon

swamp lily and water dragon both are nouns.

Word	Noun	Adjective	Verb	Adverb
swamp lily	Yes	No	No	No
water dragon	Yes	No	No	No

As nouns, swamp lily and water dragon are synonyms defined as:

swamp lily and water dragon: North American herbaceous perennial of wet places having slender curled racemes of small white flowers

Other synonyms of swamp lily include lizard's-tail, Saururus cernuus.

swamp lily (noun)	water dragon (noun)
North American herbaceous perennial of wet places having slender curled racemes of small white flowers	swamp plant of Europe and North America having bright yellow flowers resembling buttercups
	North American herbaceous perennial of wet places having slender curled racemes of small white flowers