The term “adhesion” refers to the force of attraction between different substances, such as two different materials. It is a critical concept in various scientific fields, including physics, chemistry, and biology, playing a significant role in phenomena like the sticking of glue to surfaces, cell attachment in organisms, and the water droplets clinging to a glass surface. Adhesion is governed by several factors, including the physical and chemical properties of the materials involved, surface energy, and the presence of any intervening substances. In practical applications, understanding and manipulating adhesion can lead to innovations in materials science, medical implants, and adhesive products. It contrasts with “cohesion,” which describes the attraction between like substances.