Gold coating refers to covering an object with a layer of gold, which could be in the form of sheets, plating, or spray. Other words that can be used to describe this process include gilding, gold leafing, gold plating, or gold veneering. Gilding is the process of applying a thin layer of gold leaf or powder onto a surface using an adhesive, while gold plating involves using electrolysis to deposit a thin layer of gold onto an object's surface. Gold veneering, on the other hand, is a process that involves applying a thin layer of gold over another material using pressure and heat. Overall, these synonyms for gold coating describe the use of gold as a decorative finish that adds elegance and value to any object.