<human>:  Explain the difference between a tropical storm and a hurricane
<bot>: A tropical storm is a category of low-pressure system that forms in tropical regions. It is characterized by sustained winds of 38 to 73 mph, and usually brings heavy rain and thunderstorms. A hurricane is a type of tropical storm which is characterized by winds exceeding 74 mph and extremely strong winds and rain. Hurricanes can cause significantly more damage than tropical storms due to their higher intensity and sustained winds.