Unglazed tiles are more resistant to scratches and slips than glazed tiles, offering a less shiny, often matte appearance. Typically, unglazed tiles are more porous, making them more susceptible to absorbing water, dirt, or oil. Glazed tiles usually have a shiny finish, although it's worth noting that they can also be found with a matte glaze.
Glazed tiles have an extra layer of liquid glass applied to the top. Glazed tiles also are more stain-resistant than unglazed and come in a larger variety of colors and styles.