TotT - Tilkis Barone: Artes

Master Arte Extensions (必殺技 - Hissatsugi)
All master artes are extended combinations of existing base artes. To use a master arte during battle, two compatible base artes must be linked together in the correct order. The master arte will activate automatically, as an extension of the first base arte (not as a chained but separate skill like in other games).

Master artes cannot be set to skill shortcuts, and therefore they cannot be used separately.

Arcane Arte Extensions (奥義 - Ougi)
All arcane artes are extended combinations of existing base and master artes. To use an arcane arte during battle, a master arte must be linked with a compatible base arte, in the same way master artes themselves are formed. The arcane arte will activate automatically, as an extension of the original master arte.

Arcane artes cannot be set to skill shortcuts, and therefore they cannot be used separately.