red osier dogwood vs redbrush

red osier dogwood and redbrush both are nouns.

Word	Noun	Adjective	Verb	Adverb
red osier dogwood	Yes	No	No	No
redbrush	Yes	No	No	No

As nouns, red osier dogwood and redbrush are synonyms defined as:

red osier dogwood and redbrush: common North American shrub with reddish purple twigs and white flowers

Other synonyms of red osier dogwood include American dogwood, Cornus stolonifera, red dogwood, red osier.

red osier dogwood (noun)	redbrush (noun)
common North American shrub with reddish purple twigs and white flowers	common North American shrub with reddish purple twigs and white flowers