frostweed vs frost-weed

frostweed and frost-weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
frostweed	Yes	No	No	No
frost-weed	Yes	No	No	No

As nouns, frostweed and frost-weed are synonyms defined as:

frostweed and frost-weed: 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

Other synonyms of frostweed include Crocanthemum canadense, frostwort, Helianthemum canadense.

As nouns, frostweed and frost-weed are synonyms defined as:

frostweed and frost-weed: tall perennial herb having clusters of white flowers; the eastern United States

Other synonyms of frostweed include Verbesina virginica, Virginia crownbeard.

frostweed (noun)	frost-weed (noun)
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	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	tall perennial herb having clusters of white flowers; the eastern United States