A coating is a covering applied to the surface of an object, often referred to as a substrate. The purpose of applying the coating may be decorative, functional, or both. The coating itself may be a full coating, completely covering the substrate, or it may cover only the portion of the substrate. An example of all of these types of coatings is the product label on many beverage bottles - one side with a full-function coating (adhesive) and the other with one or more appropriate patterns (printed) to form words and images. Paint and paint are mainly used to protect the substrate and decorative dual-use paint, although some artists paint only for decoration, and large industrial pipe paint may only be used to prevent corrosion. Functional Metal Coating can be used to alter the surface properties of the substrate, such as adhesion, wetting, corrosion resistance or abrasion resistance. In other cases, such as the manufacture of semiconductor devices in which the substrate is a w...