bitterroot vs Lewisia

bitterroot and Lewisia both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitterroot	Yes	No	No	No
Lewisia	Yes	No	No	No

bitterroot (noun)	Lewisia (noun)
showy succulent ground-hugging plant of Rocky Mountains regions having deep to pale pink flowers and fleshy farinaceous roots; the Montana state flower	genus of western North American low-growing herbs having linear woolly leaves and large pink flowers