Governments are classified as unitary or federal based on the distribution of power between the central and regional authorities. In a unitary system, all power is concentrated in the central government. In federal systems, power is shared between central and regional governments, each having distinct spheres of authority.

The Supreme Court of India can issue five types of writs under Article 32 of the Indian Constitution for the enforcement of fundamental rights. These writs are habeas corpus, mandamus, prohibition, quo warranto, and certiorari.

"Habeas corpus" is a Latin term that translates to "to have the body of." It refers to a legal order that requires a person who is detaining another individual to bring the detained person before a court or judge. This writ ensures that the detainee's physical liberty is protected, preventing unlawful or arbitrary detention. Habeas corpus is a fundamental right in many legal systems and is essential for safeguarding individual freedoms.