<human>:  What is the difference between a hurricane and a tornado?
<bot>: The primary difference between a hurricane and a tornado is that a hurricane is a large storm system that forms over tropical or subtropical waters, with winds reaching up to 74 mph or higher. A tornado, on the other hand, is a narrow, rapidly rotating column of air that forms as a result of changing wind directions and increases in speed that is spawned by a thunderstorm. Hurricanes often bring heavy rainfall and can cause extensive damage, while tornadoes typically form quickly and may last for just minutes before dissipating.