crown-beard vs crown beard

crown-beard and crown beard both are nouns.

Word	Noun	Adjective	Verb	Adverb
crown-beard	Yes	No	No	No
crown beard	Yes	No	No	No

As nouns, crown-beard and crown beard are synonyms defined as:

crown-beard and crown beard: any plant of the genus Verbesina having clustered white or yellow flower heads

Other synonyms of crown-beard include crownbeard.

crown-beard (noun)	crown beard (noun)
any plant of the genus Verbesina having clustered white or yellow flower heads	any plant of the genus Verbesina having clustered white or yellow flower heads