black henbane vs stinking nightshade

black henbane and stinking nightshade both are nouns.

Word	Noun	Adjective	Verb	Adverb
black henbane	Yes	No	No	No
stinking nightshade	Yes	No	No	No

As nouns, black henbane and stinking nightshade are synonyms defined as:

black henbane and stinking nightshade: poisonous fetid Old World herb having sticky hairy leaves and yellow-brown flowers; yields hyoscyamine and scopolamine

Other synonyms of black henbane include henbane, Hyoscyamus niger.

black henbane (noun)	stinking nightshade (noun)
poisonous fetid Old World herb having sticky hairy leaves and yellow-brown flowers; yields hyoscyamine and scopolamine	poisonous fetid Old World herb having sticky hairy leaves and yellow-brown flowers; yields hyoscyamine and scopolamine