Vaccinium pennsylvanicum vs low-bush blueberry

Vaccinium pennsylvanicum and low-bush blueberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vaccinium pennsylvanicum	Yes	No	No	No
low-bush blueberry	Yes	No	No	No

As nouns, Vaccinium pennsylvanicum and low-bush blueberry are synonyms defined as:

Vaccinium pennsylvanicum and low-bush blueberry: low-growing deciduous shrub of northeastern North America having flowers in compact racemes and bearing sweet dark blue berries

Other synonyms of Vaccinium pennsylvanicum include low blueberry, Vaccinium angustifolium.

Vaccinium pennsylvanicum (noun)	low-bush blueberry (noun)
low-growing deciduous shrub of northeastern North America having flowers in compact racemes and bearing sweet dark blue berries	low-growing deciduous shrub of northeastern North America having flowers in compact racemes and bearing sweet dark blue berries