twinberry vs Mitchella repens

twinberry and Mitchella repens both are nouns.

Word	Noun	Adjective	Verb	Adverb
twinberry	Yes	No	No	No
Mitchella repens	Yes	No	No	No

As nouns, twinberry and Mitchella repens are synonyms defined as:

twinberry and Mitchella repens: creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries

Other synonyms of twinberry include boxberry, partridgeberry.

twinberry (noun)	Mitchella repens (noun)
shrubby honeysuckle with purple flowers; western North America	creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries
creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries