crownbeard vs crown beard

crownbeard and crown beard both are nouns.

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

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

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

Other synonyms of crownbeard include crown-beard.

crownbeard (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