Bonding agents are substances that are used to join two or more materials together. Mortars, which are composed of cement, sand, and water, are a type of bonding agent commonly used in construction. PARENTS are also considered bonding agents, as they provide emotional support and guidance to their children. Uniting two or more people can also be considered a form of bonding agent, as it creates a connection between them. GLUES are another type of bonding agent, as they are used to stick two materials together.