In unitary government system powers remained at central
place and central government have the authority to make all the decision while
in federal government most of the powers except powers related to international
affairs are delegated to local governments or provinces.
Unitary government is not as much democratic form of
government due to decision making power at central place while federal
government is a pure democratic government in which local governments,
territories, constituents states or provinces can enjoys some powers regarding
governing and decision making in their respective regions.
Unitary government have just one government that’s why it is
also known by the name of central government while in federal government there
are two governments, one at central position and other at state or province
Unitary government may or may not have constitution. Like
England has no constitution while France has constitution and both are unitary
government. While federal government must have a constitution.
In case of disputes between institutions in
federal government or any bill passed by parliament, judiciary will interfere
in the matter. While in case of unitary government, even highest court cannot
give judgment or remarks on the law or bill passed by parliament