swamp lily vs Saururus cernuus

swamp lily and Saururus cernuus both are nouns.

Word	Noun	Adjective	Verb	Adverb
swamp lily	Yes	No	No	No
Saururus cernuus	Yes	No	No	No

As nouns, swamp lily and Saururus cernuus are synonyms defined as:

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

Other synonyms of swamp lily include lizard's-tail, water dragon.

swamp lily (noun)	Saururus cernuus (noun)
North American herbaceous perennial of wet places having slender curled racemes of small white flowers	North American herbaceous perennial of wet places having slender curled racemes of small white flowers