brooklime vs swamp plant

brooklime and swamp plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
brooklime	Yes	No	No	No
swamp plant	Yes	No	No	No

As nouns, swamp plant is a hypernym of brooklime; that is, swamp plant is a word with a broader meaning than brooklime:

brooklime: plant of western North America and northeastern Asia having prostrate stems with dense racemes of pale violet to lilac 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 brooklime include bog plant, marsh plant.

As nouns, swamp plant is a hypernym of brooklime; that is, swamp plant is a word with a broader meaning than brooklime:

brooklime: European plant having low-lying stems with blue flowers; sparsely naturalized in North America
swamp plant: a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath

Other hypernyms of brooklime include bog plant, marsh plant.

brooklime (noun)	swamp plant (noun)
plant of western North America and northeastern Asia having prostrate stems with dense racemes of pale violet to lilac flowers	a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath
European plant having low-lying stems with blue flowers; sparsely naturalized in North America