Composites and alloys are both made by combining different materials, but they are made and have different properties in different ways.
Composites are made by combining two or more different materials, usually with different properties, to make a new material with better properties. Composites can be made by combining materials like fibres, particles, or flakes with a matrix material like a polymer or metal. This makes a material with different properties than the parts that make it up. Composites often have properties that make them stand out, such as high strength-to-weight ratios, resistance to corrosion, and more.
Alloys, on the other hand, are made by putting together two or more metals to make a new material with certain properties. You can make an alloy by melting two or more metals together and then letting them cool. You can also make an alloy by adding a powder of one metal to another metal or by electroplating. Alloys are made to have certain qualities, like high strength, resistance to corrosion, or high conductivity. They are often used to make structural and mechanical parts.