European elder vs Sambucus nigra

European elder and Sambucus nigra both are nouns.

Word	Noun	Adjective	Verb	Adverb
European elder	Yes	No	No	No
Sambucus nigra	Yes	No	No	No

As nouns, European elder and Sambucus nigra are synonyms defined as:

European elder and Sambucus nigra: a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies

Other synonyms of European elder include black elder, bourtree, common elder, elderberry.

European elder (noun)	Sambucus nigra (noun)
a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies	a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies