meadow bright vs Caltha palustris

meadow bright and Caltha palustris both are nouns.

Word	Noun	Adjective	Verb	Adverb
meadow bright	Yes	No	No	No
Caltha palustris	Yes	No	No	No

As nouns, meadow bright and Caltha palustris are synonyms defined as:

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

Other synonyms of meadow bright include cowslip, kingcup, marsh marigold, May blob, water dragon.

meadow bright (noun)	Caltha palustris (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