red-berried elder vs American red elder

red-berried elder and American red elder both are nouns.

Word	Noun	Adjective	Verb	Adverb
red-berried elder	Yes	No	No	No
American red elder	Yes	No	No	No

As nouns, red-berried elder and American red elder are synonyms defined as:

red-berried elder and American red elder: common North American shrub or small tree

Other synonyms of red-berried elder include Sambucus pubens, stinking elder.

red-berried elder (noun)	American red elder (noun)
Eurasian shrub	common North American shrub or small tree
common North American shrub or small tree