Blades are flat, sharp-edged tools or weapons used for cutting, slicing, or stabbing. They can be made from various materials, including metal, ceramic, or plastic, and come in different shapes and sizes. Common examples of blades include kitchen knives, swords, and razors. In addition to their practical uses, blades are also significant in various cultures and histories. For instance, the katana is a traditional Japanese sword known for its distinctive curved blade and craftsmanship. Blades are essential in many industries, including culinary, manufacturing, and outdoor activities like camping and hunting.