water dragon vs marsh plant

water dragon and marsh plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
water dragon	Yes	No	No	No
marsh plant	Yes	No	No	No

As nouns, marsh plant is a hypernym of water dragon; that is, marsh plant is a word with a broader meaning than water dragon:

water dragon: swamp plant of Europe and North America having bright yellow flowers resembling buttercups
marsh plant: a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath

Other hypernyms of water dragon include bog plant, swamp plant.

As nouns, marsh plant is a hypernym of water dragon; that is, marsh plant is a word with a broader meaning than water dragon:

water dragon: North American herbaceous perennial of wet places having slender curled racemes of small white flowers
marsh plant: a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath

Other hypernyms of water dragon include bog plant, swamp plant.

water dragon (noun)	marsh plant (noun)
swamp plant of Europe and North America having bright yellow flowers resembling buttercups	a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath
North American herbaceous perennial of wet places having slender curled racemes of small white flowers