black bearberry vs alpine bearberry

black bearberry and alpine bearberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
black bearberry	Yes	No	No	No
alpine bearberry	Yes	No	No	No

As nouns, black bearberry and alpine bearberry are synonyms defined as:

black bearberry and alpine bearberry: deciduous creeping shrub bright red in autumn having black or blue-black berries; alpine and circumpolar

Other synonyms of black bearberry include Arctostaphylos alpina.

black bearberry (noun)	alpine bearberry (noun)
deciduous creeping shrub bright red in autumn having black or blue-black berries; alpine and circumpolar	deciduous creeping shrub bright red in autumn having black or blue-black berries; alpine and circumpolar