common box vs European box

common box and European box both are nouns.

Word	Noun	Adjective	Verb	Adverb
common box	Yes	No	No	No
European box	Yes	No	No	No

As nouns, common box and European box are synonyms defined as:

common box and European box: large slow-growing evergreen shrub or small tree with multiple stems; extensively used for hedges or borders and topiary figures

Other synonyms of common box include Buxus sempervirens.

common box (noun)	European box (noun)
large slow-growing evergreen shrub or small tree with multiple stems; extensively used for hedges or borders and topiary figures	large slow-growing evergreen shrub or small tree with multiple stems; extensively used for hedges or borders and topiary figures