red bearberry vs mountain box

red bearberry and mountain box both are nouns.

Word	Noun	Adjective	Verb	Adverb
red bearberry	Yes	No	No	No
mountain box	Yes	No	No	No

As nouns, red bearberry and mountain box are synonyms defined as:

red bearberry and mountain box: evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn

red bearberry (noun)	mountain box (noun)
evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn	evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn