water dragon vs swamp plant

water dragon and swamp plant both are nouns.

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

As nouns, swamp plant is a hypernym of water dragon; that is, swamp 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
swamp 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, marsh plant.

As nouns, swamp plant is a hypernym of water dragon; that is, swamp 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
swamp 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, marsh plant.

water dragon (noun)	swamp 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