A microkernel implements all drivers as user-space programs, and implements core features like IPC in the kernel itself. A monolithic kernel, however, implements the drivers as a part of the kernel...
Porcelain is made with kaolin clay. Kaolin is white clay that retains its white color when fired. It is fired at temperatures in excess of 1300 C and is more fully vitrified than stoneware. It is usually covered with a clear glaze, which allows the white body to show.
Answer: There are differences between ceramic and porcelain tiles that cause lots of confusion! Here are the differences, SIMPLIFIED! Ceramic Tiles: Are made with clay, minerals and water. These tiles are then fired and glazed because the ceramic is porous. This is where the color and look comes from.