This blog is about the pages Black Arts, Black Magic, White Arts
and White Magic, and from what I have read and what has been said
is that there are no real difference between the two.
Even when looking at the definition, Black Arts and Black Magic
by definition are not really different from one another, just magic
that are used for negative purpose, The only difference is that
Black Arts is the sum of all Black Magic
Even in the raws for what Zeref was described to have mastered
the Black Arts, when doing a bit of a rough translation, you get
Black Magic most of the time.
Even when Invel was talking about the origins of Black Magic, he
says that it is the basis of Zeref's powers.
Even when Mavis said that Zeref's curse is Anksheram's Black