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...
The composition of the porcelain clays is usually more malleable than the clays used for china ware. This allows for forming of more intricate and detailed shapes. China ware differs from porcelain not only in color shade, but also in the way it is fired. Where Porcelain becomes vitrified during the second firing (second firing is hotter than first firing), china ware is vitrified during a single firing. With the china, there is only a single firing.
Porcelain tile is generally made by pressing porcelain clays, which results in a tile that's dense, impervious, fine grained, and smooth with a sharply formed face. Porcelain tiles usually have a much lower water absorption rate than ceramic tiles, making them more frost resistant, although not frost proof.