stinking nightshade vs black henbane

stinking nightshade and black henbane both are nouns.

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

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

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

Other synonyms of stinking nightshade include henbane, Hyoscyamus niger.

stinking nightshade (noun)	black henbane (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