Constitution can mainly be classified into the following types:Written and UnwrittenRigid and flexibleEnacted and evolvedUnitary and federal

The Constitution can be classified into several types, including:

1. Written and Unwritten: A written constitution is a formal document defining the nature of the constitutional settlement, the rules that govern the political system and the rights of citizens and governments in a codified form. On the other hand, an unwritten constitution is a type of constitution where the fundamental rules often take the form of customs, usage, precedent and a variety of statutes and legal instruments.

2. Rigid and Flexible: A rigid constitution is one that requires a special procedure for its amendment or revision. In contrast, a flexible constitution is one that can be amended in the same way as ordinary legislation.

3. Enacted and Evolved: An enacted constitution is one that is made by a deliberate and conscious act, while an evolved constitution is one which is a product of slow and gradual development over a long period of time, rather than from a deliberate and conscious act.

4. Unitary and Federal: A unitary constitution is one that establishes a centralised system of government, where the central government holds most of the power. A federal constitution, on the other hand, is one where the powers of government are divided between a central government and individual states.