Caltha palustris vs marsh marigold

Caltha palustris and marsh marigold both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caltha palustris	Yes	No	No	No
marsh marigold	Yes	No	No	No

As nouns, Caltha palustris and marsh marigold are synonyms defined as:

Caltha palustris and marsh marigold: swamp plant of Europe and North America having bright yellow flowers resembling buttercups

Other synonyms of Caltha palustris include cowslip, kingcup, May blob, meadow bright, water dragon.

Caltha palustris (noun)	marsh marigold (noun)
swamp plant of Europe and North America having bright yellow flowers resembling buttercups	swamp plant of Europe and North America having bright yellow flowers resembling buttercups