red bearberry vs common bearberry

red bearberry and common bearberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
red bearberry	Yes	No	No	No
common bearberry	Yes	No	No	No

As nouns, red bearberry and common bearberry are synonyms defined as:

red bearberry and common bearberry: 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)	common bearberry (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