marsh marigold vs cowslip

marsh marigold and cowslip both are nouns.

Word	Noun	Adjective	Verb	Adverb
marsh marigold	Yes	No	No	No
cowslip	Yes	No	No	No

As nouns, marsh marigold and cowslip are synonyms defined as:

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

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

marsh marigold (noun)	cowslip (noun)
swamp plant of Europe and North America having bright yellow flowers resembling buttercups	early spring flower common in British isles having fragrant yellow or sometimes purple flowers
	swamp plant of Europe and North America having bright yellow flowers resembling buttercups