stinking hellebore vs hellebore

stinking hellebore and hellebore both are nouns.

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

As nouns, hellebore is a hypernym of stinking hellebore; that is, hellebore is a word with a broader meaning than stinking hellebore:

stinking hellebore: digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally
hellebore: any plant of the Eurasian genus Helleborus

stinking hellebore (noun)	hellebore (noun)
digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally	any plant of the Eurasian genus Helleborus
	perennial herbs of the lily family having thick toxic rhizomes