+Adsorption is a [surface](/wiki/surface) phenomenon where [molecules](/wiki/molecule) adhere to the exterior of a solid or liquid, forming a film. Unlike absorption, which involves a substance penetrating the bulk, adsorption is confined to the interface. This process plays a vital role in purification, catalysis, and various environmental and industrial applications.
+## See also
+- [Absorption](/wiki/absorption)
+- [Desorption](/wiki/desorption)
+- [Catalysis](/wiki/catalysis)
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