genus Polygonum vs prince's-plume

genus Polygonum and prince's-plume both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Polygonum	Yes	No	No	No
prince's-plume	Yes	No	No	No

genus Polygonum (noun)	prince's-plume (noun)
diverse genus of herbs or woody subshrubs of north temperate regions	perennial of southwestern United States having leathery blue-green pinnatifid leaves and thick plumelike spikes of yellow flowers; sometimes placed in genus Cleome
	tall showy tropical American annual having hairy stems and long spikes of usually red flowers above leaves deeply flushed with purple; seeds often used as cereal
	annual with broadly ovate leaves and slender drooping spikes of crimson flowers; southeastern Asia and Australia; naturalized in North America