Primer consists of a binder and a filler containing pigment. The most commonly used fillers are chalk and kaolin. Primers can also be applied to paper, cardboard, wood, canvas, concrete surfaces, and other surfaces that are difficult for paint to bond to or adhere to on its own. The most popular product in this field is Gesso primer. Adhesives have the ability to bond different materials together thanks to properties such as external adhesion and internal cohesion. In addition to the proper binding agent (binder), various materials such as solvents, hardeners, fillers, plasticizers, etc., are used in the production of adhesives.