boxberry vs twinberry

boxberry and twinberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
boxberry	Yes	No	No	No
twinberry	Yes	No	No	No

As nouns, boxberry and twinberry are synonyms defined as:

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

Other synonyms of boxberry include Mitchella repens, partridgeberry.

boxberry (noun)	twinberry (noun)
spicy red berrylike fruit; source of wintergreen oil	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