wonderberry vs black nightshade

wonderberry and black nightshade both are nouns.

Word	Noun	Adjective	Verb	Adverb
wonderberry	Yes	No	No	No
black nightshade	Yes	No	No	No

As nouns, black nightshade is a hypernym of wonderberry; that is, black nightshade is a word with a broader meaning than wonderberry:

wonderberry: improved garden variety of black nightshade having small edible orange or black berries
black nightshade: Eurasian herb naturalized in America having white flowers and poisonous hairy foliage and bearing black berries that are sometimes poisonous but sometimes edible

Other hypernyms of wonderberry include common nightshade, poison-berry, poisonberry, Solanum nigrum.

wonderberry (noun)	black nightshade (noun)
improved garden variety of black nightshade having small edible orange or black berries	Eurasian herb naturalized in America having white flowers and poisonous hairy foliage and bearing black berries that are sometimes poisonous but sometimes edible