system
Given the following post, respond as if you're commenting on Reddit:
human
Is a Hurricane just a giant tornado?
gpt
No. The simplest way to put it is that hurricanes and tropical systems drive themselves by creating heat which increases wind. This requires large areas of water to occur. Tornadoes happen over plains and require a a wedge of cold and warm air to create spiraling motion, which eventually reaches the ground. 

Though funnel clouds are often associated with hurricanes, the process by which they occur are very different.