Indoor Tiles
Indoor Tiles are suited to a range of indoor wall and floor uses.
Their properties are ideal for internal use, and this category accommodates the bulk of Tiles available on the open market.
As internal tiles, they generally lack the adhesion properties and slip resistance provided by Outdoor Tiles, which are manufactured to be trafficked in wet and dry conditions alike. Hence slip resistance is a property expected with tiles used Outdoors. Furthermore, some Internal Tiles (usually Ceramic Tiles) are only suitable for use on walls as they are either brittle, or soft-glazed. Hence, due to these characteristics they are unsuitable for use on floors.
So simply bear in mind that all tiles have a purpose that they were designed for, so choose warily!