Distinguish between kilowatt and kilowatt hour.

Explanation

Kilowatt is the unit of power. 1 kilowatt = 1000 watt. Kilowatt hour is the unit of electric energy, where
1 Kilowatt hour = 1000 watt `xx` 1 hour
= 1000 watt `xx` 60 `xx` 60 `xx` second `= 3.6xx10^(6)J`