Volt is the unit to measure voltage or potential difference of a circuit. Whereas amps or amperes is the unit to measure current flowing in the circuit. they are definitely not the same but two...
A milliamp-hour (mAh) is a measure of quality of a battery. It tells you how many hours the batter can provide one milliamp of current before it will die. A volt is the unit of electric potential....
Liken volt and amp to a water in a pipe. Voltage is the water pressure in the pipe and amperage is the water flow through the pipe. They are two completely different electrical units.