Considering that, usually, current is a consequence of a voltage over a load, why do we focus on current when talking about alternating or direct electrical quantities (i.e alternating current and direct current)?
In the control of static converters, for instance, normally we have a voltage reference that is either alternating or constant. In electric generators, it is an induced alternating voltage that is produced from the resulting spin of the machine's rotor. Transformers relate voltages, even without any current flowing.
Wouldn't it be more accurate to say AV/DV instead? Maybe this is something that we say just because "everybody does"? Maybe it's historical, but it would be interesting to know where all this started.
There is a related question (Why is DC Voltage called Direct Current ?) where some answers mention the fact but doesn't really explain why is it.[