cranberry bush vs American cranberry bush

cranberry bush and American cranberry bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
cranberry bush	Yes	No	No	No
American cranberry bush	Yes	No	No	No

As nouns, cranberry bush and American cranberry bush are synonyms defined as:

cranberry bush and American cranberry bush: deciduous North American shrub or small tree having three-lobed leaves and red berries

Other synonyms of cranberry bush include cranberry tree, highbush cranberry, Viburnum trilobum.

cranberry bush (noun)	American cranberry bush (noun)
deciduous North American shrub or small tree having three-lobed leaves and red berries	deciduous North American shrub or small tree having three-lobed leaves and red berries