black elderberry vs Sambucus canadensis

black elderberry and Sambucus canadensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
black elderberry	Yes	No	No	No
Sambucus canadensis	Yes	No	No	No

As nouns, black elderberry and Sambucus canadensis are synonyms defined as:

black elderberry and Sambucus canadensis: common elder of central and eastern North America bearing purple-black berries; fruit used in wines and jellies

Other synonyms of black elderberry include American elder, sweet elder.

black elderberry (noun)	Sambucus canadensis (noun)
common elder of central and eastern North America bearing purple-black berries; fruit used in wines and jellies	common elder of central and eastern North America bearing purple-black berries; fruit used in wines and jellies