There are several types of tiles that can be used on kitchen and bathroom floors, including:

1. Ceramic tiles: These are a popular choice for kitchen and bathroom floors due to their durability, moisture resistance, and easy maintenance. Ceramic tiles come in a wide variety of colors, styles, and patterns.

2. Porcelain tiles: These are similar to ceramic tiles but are denser, harder, and less porous. They are also more resistant to scratches and stains and can withstand heavy foot traffic, making them an excellent choice for kitchen and bathroom floors.

3. Natural stone tiles: These include marble, granite, travertine, and slate. Natural stone tiles offer a unique look and are highly durable, but they require regular maintenance to keep them looking their best.

Ultimately, the best type of tile for your kitchen and bathroom floors will depend on your budget, style preferences, and maintenance requirements. It's a good idea to consult with a professional tile installer to help you choose the right type of tile for your specific needs.