henbane vs stinking nightshade

henbane and stinking nightshade both are nouns.

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

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

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

Other synonyms of henbane include black henbane, Hyoscyamus niger.

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