Ceramic and porcelain tiles are both made from clay and other natural materials, but there are some key differences between the two materials.

Composition
Ceramic tiles are made from a mixture of clay, minerals, and water, which is then fired at high temperatures. Porcelain tiles, on the other hand, are made from a more refined clay mixture, which is fired at an even higher temperature. Porcelain tiles are also denser and harder than ceramic tiles.

Durability
Porcelain tiles are more durable than ceramic tiles. Porcelain tiles are harder and less porous than ceramic tiles, which makes them less likely to crack or chip. Porcelain tiles are also more resistant to stains, scratches, and moisture than ceramic tiles.

Water Absorption
Porcelain tiles have a very low water absorption rate, which means they are highly water-resistant. This makes them ideal for areas with high moisture, such as bathrooms and kitchens. Ceramic tiles, on the other hand, are more porous and can absorb more water. This makes them less suitable for areas with high moisture.

Maintenance
Both porcelain and ceramic tiles are relatively easy to maintain and keep clean. However, porcelain tiles are generally easier to maintain because they are less porous and therefore less likely to stain. Ceramic tiles can be more prone to staining, and may require more frequent cleaning.

Cost
Porcelain tiles are generally more expensive than ceramic tiles. This is due to the fact that porcelain tiles are made from a more refined clay mixture and are fired at higher temperatures. Ceramic tiles are generally more affordable and come in a wider range of colors and styles.

In summary, the main differences between ceramic and porcelain tiles are their composition, durability, water absorption, maintenance, and cost. Porcelain tiles are more durable, water-resistant, and easier to maintain, but are generally more expensive than ceramic tiles. Ceramic tiles are less durable and water-resistant, but are more affordable and come in a wider range of colors and styles.