1.  decentralization(n = noun.process) decentalisation - the social process in which population and industry moves from urban centers to outlying districts;
is a kind of social process
Derived form verb decentralize₁

2.  decentralization(n = noun.act) decentralisation - the spread of power away from the center to local branches or governments;
is a kind of spread, spreading
Antonym: centralization
Derived form verb decentralize₁