Glass etching is the process of removing portions of the glass surface to create an image or design. There are several synonymous terms used to describe this art form, including glass engraving, glass carving, sandblasting, and acid etching. Glass engraving is a process of creating designs by cutting or scratching on the glass surface. Glass carving is a technique that involves using a handheld tool to carve designs into the glass surface. Sandblasting is a method that uses sand or other abrasive materials to erode the glass surface to create a design. Acid etching is a chemical process of applying an acid solution to the glass surface to etch the design. All these techniques require skill and creativity to produce beautiful designs on glass surfaces.