Wall Tile and Backsplash
A backsplash is a vertical extension to a counter--typically kitchen or bathroom counter--which protects the wall from unintended splashes of water.
A backsplash can be constructed out of tile. Glass mosaic is the most popular form of tile backsplash.
However, other materials, such as granite, Corian, Silestone, stainless steel can be used as a backsplash. As a rule, though, the same material used to make the counter is also used to make the backsplash. It is often considered an optional element, so confirm with your installer that they will be giving you a backsplash.