stinking hellebore vs Helleborus foetidus

stinking hellebore and Helleborus foetidus both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinking hellebore	Yes	No	No	No
Helleborus foetidus	Yes	No	No	No

As nouns, stinking hellebore and Helleborus foetidus are synonyms defined as:

stinking hellebore and Helleborus foetidus: digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally

Other synonyms of stinking hellebore include bear's foot, setterwort.

stinking hellebore (noun)	Helleborus foetidus (noun)
digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally	digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally