Centralization:

Concentrating decision making at a single point in the company makes the company more centralized.

Central Bank:

Central bank is the national bank at the apex of a national banking system. In the United States the Fed acts independently of federal fiscal policy. In the United States, it is the Federal Reserve Bank, in Great Britain it is the Bank of England, and in Japan it is the Bank of Japan.  Like many other central banks, however, the Fed determines the nation's monetary policy by setting interest rates and determining the money provide for the country.