Verbesina virginica vs frostweed

Verbesina virginica and frostweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Verbesina virginica	Yes	No	No	No
frostweed	Yes	No	No	No

As nouns, Verbesina virginica and frostweed are synonyms defined as:

Verbesina virginica and frostweed: tall perennial herb having clusters of white flowers; the eastern United States

Other synonyms of Verbesina virginica include frost-weed, Virginia crownbeard.

Verbesina virginica (noun)	frostweed (noun)
tall perennial herb having clusters of white flowers; the eastern United States	perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts
	tall perennial herb having clusters of white flowers; the eastern United States