common bearberry vs red bearberry

common bearberry and red bearberry both are nouns.

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

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

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

common bearberry (noun)	red 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