skirret vs bog plant

skirret and bog plant both are nouns.

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

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

skirret: an Asiatic herb cultivated in Europe for its sweet edible tuberous root
bog plant: a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath

Other hypernyms of skirret include marsh plant, swamp plant.

skirret (noun)	bog plant (noun)
an Asiatic herb cultivated in Europe for its sweet edible tuberous root	a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath