Vaccinium scoparium vs grouse whortleberry

Vaccinium scoparium and grouse whortleberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vaccinium scoparium	Yes	No	No	No
grouse whortleberry	Yes	No	No	No

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

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

Other synonyms of Vaccinium scoparium include grouse-berry, grouseberry.

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