grouse-berry vs Vaccinium scoparium

grouse-berry and Vaccinium scoparium both are nouns.

Word	Noun	Adjective	Verb	Adverb
grouse-berry	Yes	No	No	No
Vaccinium scoparium	Yes	No	No	No

As nouns, grouse-berry and Vaccinium scoparium are synonyms defined as:

grouse-berry and Vaccinium scoparium: shrub of northwestern North America bearing red berries

Other synonyms of grouse-berry include grouse whortleberry, grouseberry.

grouse-berry (noun)	Vaccinium scoparium (noun)
shrub of northwestern North America bearing red berries	shrub of northwestern North America bearing red berries