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.
Vitreous china and porcelain cost about the same, however, vitreous china is better at resisting spills, scrapes, or other bathroom mishaps. The high gloss enamel is very durable and creates a stain-resistant surface. Also, vitreous china has sanitary properties which are great to use in the bathroom.