Finishes refer to the final treatment applied to a surface to enhance its appearance, durability, or functionality. Common types of finishes include paint, varnish, stain, and lacquer, each offering different aesthetic qualities and protective features. Finishes can be used on various materials, such as wood, metal, and plastic, to achieve desired effects. In addition to aesthetic purposes, finishes can also provide resistance to environmental factors like moisture, UV light, and abrasion. For example, a wood finish can protect furniture from scratches and water damage, while a metal finish can prevent rust and corrosion. Proper application of finishes is essential for achieving optimal results.