Bonding is a joining process that joins two or more materials together using an adhesive that sticks between the surfaces. Unlike other joining methods, such as welding or riveting, bonding does not require additional components such as screws or bolts and allows for even load distribution across the entire bonding surface. Bonding also offers high design flexibility as it can bond different materials and shapes together without compromising their properties. Adhesives can be applied in the form of liquids, pastes, films or foils and are often categorized based on their chemical composition and the method of adhesion, such as physical adhesion or chemical bonding. When bonding, preparation of surfaces and selection of the appropriate adhesive are critical to ensure optimal adhesion and create a durable, resilient bond.