The motor can be stopped abruptly, but not reversed. Power is taken from a voltage source, delivered to a load, or vice versa, AND the voltage to the load can be reversed. IE Current flows in both directions, AND the voltage to the load can be of either polarity. IE Current flows from or to a battery when connected to a DC motor that runs in both directions. The motor can be stopped abruptly, and dynamically reversed.
Power is taken from a voltage source, delivered to a load.
Usually the Conversion is a voltage to a voltage, but can be a voltage to a current. IE a 12 volt battery, that varies between 9.6 and 14.4 volts, is converted to 24 volts that does not vary at all. Step Down Converter. Power is taken from a voltage source, delivered to a load, and the output voltage is always less than the input voltage. If the input voltage drops below the output set point, the output will then drop with it.