I am thinking in aspect of vacuum cleaners.
neither, they are two different measurements of power
vote and amps are very differnent things, so you can't compare them like this. A simple way of discribing them is that Volts = Pressure of the electricity One amp is the amount of current produced by a force of one volt acting through the resistance of one ohm. Ohm is the messure of resistance to electricity by an object.
Sometimes a waterfall analogy is used: voltage is equivalent to how high the waterfall is, amperage to how much water is flowing. Power (watts) is volts x amps. (There is a technical point about phase, which we ignore.) Since household voltage is 110 in the US, a typical 10 amp vacuum will provide 1100 watts.
Amp is a unit of current. The rate of electrical flow. Volt is a unit of potential difference or voltage. This is usually constant for all electrical appliances in a country. In vaccum cleaners, the usual rating for how powerful the appliance is it POWER. The unit for this is Watts (W). 1800W is quite powerful. 1000W is quite weak. If they only give Voltage (Volts) and current (Amps), simply multiply the two to get the power. Power = Volts x Current.
