Virginia crownbeard vs frostweed

Virginia crownbeard and frostweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Virginia crownbeard	Yes	No	No	No
frostweed	Yes	No	No	No

As nouns, Virginia crownbeard and frostweed are synonyms defined as:

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

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

Virginia crownbeard (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