Berberis vulgaris vs European barberry

Berberis vulgaris and European barberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Berberis vulgaris	Yes	No	No	No
European barberry	Yes	No	No	No

As nouns, Berberis vulgaris and European barberry are synonyms defined as:

Berberis vulgaris and European barberry: upright deciduous European shrub widely naturalized in United States having clusters of juicy berries

Other synonyms of Berberis vulgaris include common barberry.

Berberis vulgaris (noun)	European barberry (noun)
upright deciduous European shrub widely naturalized in United States having clusters of juicy berries	upright deciduous European shrub widely naturalized in United States having clusters of juicy berries