Commonly used Blockchain Terms and their Definitions.
The movement of departments of a large organization away from a single administrative centre to other locations
(or) decentralization refers to the process of something not being under the control of a single center of administration.
A proof-of-work (PoW) system (or protocol, or function) is an economic measure to deter denial of service attacks and other service abuses such as spam on a network by requiring some work from the service requester, usually meaning processing time by a computer.
Proof-of-stake (PoS) is a type of algorithm by which a cryptocurrency blockchain network aims to achieve distributed consensus. In PoS-based cryptocurrencies the creator of the next block is chosen via various combinations of random selection and wealth or age (i.e. the stake).