A constitution provides the basis for governance in a country, which is essential to making sure that everyone’s interests and needs are addressed. It determines how laws are made, and details the process by which the government rules.
The most commonly used definition of State is Max Weber's:
It describes the State as a political organization with a, centralized government that maintains a monopoly of the legitimate use of force within a certain territory. General categories of state institutions include administrative bureaucracies, legal systems, and military organizations.
The concept of the state can be distinguished from the concept of government. That is, governments are the means through which state power is used.
State is the political entity. Family is a private institution. All institutions that fall in between can be called civil society.