Surface treatment involves the modification, enhancement, or protection of a material's surface properties. There are several synonyms for surface treatment, including surface modification, surface finishing, surface conditioning, surface coating, surface preparation, and surface engineering. Surface modification refers to any process that alters a surface's physical or chemical properties, while surface finishing aims to enhance the visual and tactile appearance of a surface. Surface conditioning is used to prepare a surface for subsequent treatment or use, while surface coating involves applying a layer of material to protect or decorate a surface. Surface preparation involves cleaning and preparing a surface before surface treatment, and surface engineering refers to the design and development of material surfaces for specific functions and properties.