black bearberry vs Arctostaphylos alpina

black bearberry and Arctostaphylos alpina both are nouns.

Word	Noun	Adjective	Verb	Adverb
black bearberry	Yes	No	No	No
Arctostaphylos alpina	Yes	No	No	No

As nouns, black bearberry and Arctostaphylos alpina are synonyms defined as:

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

Other synonyms of black bearberry include alpine bearberry.

black bearberry (noun)	Arctostaphylos alpina (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