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...
Fine bone china is more delicate than porcelain, with a warmer, translucent finish. It is typically more expensive than porcelain. Fine china is produced without the inclusion of bone ash from similar materials to porcelain.
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.