When a material soaks up some amount of gas or liquid into it, it can be said that it has absorbed the substance. On the other hand, when some fume or liquid collects on a material's surface, then the process can be called adsorb. Absorb means a means by which a substance is taken into another substance.
Absorb is also a condition in which the atoms, molecules, and ions penetrate a solid-gas or liquid material. Absorb is also a means by which a material is taken into another material. The momentum of a photon is taken into by another entity. Adsorb can be characterized as a process by which the liquid or gas is not absorbed, but it only forms on the surface. Absorb is connected to the surface.
The occurrence of adsorbing is widely used in the production of water purification and synthetic resins. With absorb, you see that something moves inside an object. Adsorb involves adhesion and dissolution or dispersion. In items that perform absorb, atoms, molecules, and additional particles are taken inside. Conversely, in adsorb, the atoms, molecules, and other substances stick to the surface.