Human: What is the difference between a jig saw and a rotary tool? Assistant: 
A jig saw is typically used for cutting wood, metal, plastic, and other materials. It has a stationary blade that moves back and forth across the material to be cut. A rotary tool, on the other hand, can cut through many different types of materials, including wood, metal, plastics, and even stone. The rotary tool uses a rotating disc with a sharp edge to cut the material.