academic art vs artistic style

academic art and artistic style both are nouns.

Word	Noun	Adjective	Verb	Adverb
academic art	Yes	No	No	No
artistic style	Yes	No	No	No

As nouns, artistic style is a hypernym of academic art; that is, artistic style is a word with a broader meaning than academic art:

academic art: a style of painting and sculpture produced under the influence of European academies of art.
artistic style: the style of a particular artist or school or movement

Other hypernyms of academic art include idiom.

academic art (noun)	artistic style (noun)
a style of painting and sculpture produced under the influence of European academies of art.	the style of a particular artist or school or movement