Human: What's the difference between a typhoon and a cyclone? Assistant: 
The main difference between a typhoon and a cyclone is that a typhoon is a tropical cyclone that originates over the warm waters of the western Pacific Ocean, while a cyclone is a generic term used to describe any low-pressure system with winds rotating around an area of low atmospheric pressure. Typhoons are typically much stronger than cyclones, with wind speeds often exceeding 155 mph (250 km/h).