I suppose it's only semantics where healing is concerned, but it goes into the differentiation between different types of abilities, at least where I come from. "Artes" are all skills granted by a blastia, but "magic" is generally used to refer only to spells created for attack. Not every arte is considered magic, but all magic is an arte.
[yeah you probably have no clue what she's talking about.]
[action]
[yeah you probably have no clue what she's talking about.]