Adhesives are substances that are used to bond two or more surfaces together. They are commonly used in a wide range of applications, including construction, manufacturing, and packaging. Adhesives can be classified based on the type of material they are made from, such as animal glue, plant-based adhesives, and synthetic adhesives. Bonding is the process of using an adhesive to join two or more surfaces together. There are several different types of bonding methods, including mechanical bonding, chemical bonding, and physical bonding. The type of adhesive and bonding method used will depend on the materials being bonded, the strength and durability required, and the conditions to which the bond will be subjected.