flagroot vs bog plant

flagroot and bog plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
flagroot	Yes	No	No	No
bog plant	Yes	No	No	No

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

flagroot: perennial marsh plant having swordlike leaves and aromatic roots
bog plant: a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath

Other hypernyms of flagroot include marsh plant, swamp plant.

flagroot (noun)	bog plant (noun)
perennial marsh plant having swordlike leaves and aromatic roots	a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath