dwarf bilberry vs Vaccinium caespitosum

dwarf bilberry and Vaccinium caespitosum both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwarf bilberry	Yes	No	No	No
Vaccinium caespitosum	Yes	No	No	No

As nouns, dwarf bilberry and Vaccinium caespitosum are synonyms defined as:

dwarf bilberry and Vaccinium caespitosum: low-growing tufted deciduous shrub of northern and alpine North America having pink to coral-red flowers followed by sweet blue berries

Other synonyms of dwarf bilberry include dwarf blueberry.

dwarf bilberry (noun)	Vaccinium caespitosum (noun)
low-growing tufted deciduous shrub of northern and alpine North America having pink to coral-red flowers followed by sweet blue berries	low-growing tufted deciduous shrub of northern and alpine North America having pink to coral-red flowers followed by sweet blue berries