What is meant by the Preamble of the Indian Constitution?

Preamble of the Indian Constitution:

• Definition: Preface or introductory statement expressing the core philosophy, values, objectives, and source of authority of the Constitution based on Pandit Nehru's Objectives Resolution.
• Core Declarations: Declares India to be a Sovereign, Socialist, Secular, Democratic Republic.
• Objectives: Guarantees Justice (social, economic, political), Liberty, Equality, and Fraternity to all citizens.