A composite is a material made from two or more constituent materials with significantly different physical or chemical properties. When combined, they create a new material that has enhanced characteristics, such as increased strength, lighter weight, or improved durability. Common examples include fiberglass (a combination of glass fibers and resin) and reinforced concrete (concrete mixed with steel). Composites are widely used in various industries, including aerospace, automotive, and construction, due to their versatility and superior performance.