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 main difference between porcelain and fine bone china is the inclusion of up to 50 percent bone ash in the porcelain mixture that makes up bone china. China is also typically fired at a lower temperature than porcelain, which is double-fired at very high temperatures. Keep Learning.
Porcelain was first made in China. The Chinese discovered that kaolin clay and petuntse combined made very sturdy pottery. When porcelain was first introduced to Europe, potters experimented with various clays to try to replicate it. Many toilets are made of porcelain.