flannel bush vs flannelbush

flannel bush and flannelbush both are nouns.

Word	Noun	Adjective	Verb	Adverb
flannel bush	Yes	No	No	No
flannelbush	Yes	No	No	No

As nouns, flannel bush and flannelbush are synonyms defined as:

flannel bush and flannelbush: any of several handsome evergreen shrubs of California and northern Mexico having downy lobed leaves and showy yellow flowers

Other synonyms of flannel bush include California beauty.

flannel bush (noun)	flannelbush (noun)
any of several handsome evergreen shrubs of California and northern Mexico having downy lobed leaves and showy yellow flowers	any of several handsome evergreen shrubs of California and northern Mexico having downy lobed leaves and showy yellow flowers