According to the terminology in Societates, Summoning, Ablating, Binding, and Commanding would be Accelerated Abilities. Similarly, Methods and Powers are something else, Arts that increase as Abilities ("Decelerated Arts"?). The rules didn't define Arts this way when we wrote Divine and Infernal, so it was easier then to just say that all of these things are Abilities, but note that some of them start at 0 and increase in the same way as Hermetic Arts.