Wall tiles
"Ceramic tiles are made from clay compositions and other inorganic raw materials. They are ground and/or slipped, moulded and subsequently dried and fired at temperatures from 1000°C/1830°F to 1250°C/2280°F to make them acquire the required properties in a stable way.
WALL TILES
Any ceramic tile is suitable for walls, bbut those specifically made, high-glossed and decorated are most commonly used. Wall tiles have a very soft glaze and porous body and therefore should never be used on floors or for outdoor applications."