Adhesion (Adhesive forces) bond between the particles or molecules, such as different types of bond between water molecules to a glass container when drops of water on wood or paper, then noticed that a piece of wood or paper is wet. Explained that the bond between water molecules is less than the bond strength between molecules of water withered wood or paper. The water can not be gathered in a trickle. So spread out if a drop of water on a smooth surface, such as plastic or a coating of some kind. Condensation is a sphere on a surface material. The bond between water molecules is greater than the bond between water molecules and materials.