Abrasives are materials used to wear away the surface of other substances through friction. They can be natural, like sand and diamond, or synthetic, such as aluminum oxide and silicon carbide. Commonly found in products like sandpaper and grinding wheels, abrasives are essential in various industries for tasks like polishing, cutting, and shaping materials. These materials come in different forms, including powders, pastes, and bonded shapes. The effectiveness of an abrasive depends on its hardness, shape, and size. They are widely used in manufacturing, construction, and even in household cleaning products to achieve smooth finishes and precise cuts.