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, on the other hand, is a manufactured product that is created to mimic the look of natural stone. To the untrained eye, some high quality porcelain tiles look and feel incredibly like natural stone, but the expert will be able to distinguish the difference, as porcelain tiles are not individually unique.