Supreme Court of India
The Supreme Court of India is the highest court of the land as established by Part V, Chapter IV of the Constitution of India. According to the Constitution of India, the role of the Supreme Court of India is that of a federal court, guardian of the Constitution and the highest court of appeal.
High Courts of India
The High Courts are the principal civil courts of original jurisdiction in the state, and can try all offences including those punishable with death. The work of most High Courts consists of Appeals from lowers courts and writ petitions in terms of Article 226 of the Constitution of India.
District Courts of India
The District Courts of India are presided over by a judge. They administer justice in India at a district level. These courts are under administrative and judicial control of the High Court of the State to which the district concerned belongs.
A tribunal is a generic term for any body acting judicially, whether or not it is called a tribunal in its title. For example, an advocate appearing before a Court on which a single Judge was sitting could describe that judge as 'their tribunal'.