The Quran calls itself by many names — each one revealing a different role it plays in the life of the believer: a reading, a criterion, a reminder, a light, a healing.
In the Arabic tradition, multiplicity of names points to nobility of the thing named. Each title the Quran gives itself is not a synonym but a window — emphasising one function. As Al-Furqan it separates truth from falsehood; as Ash-Shifa it heals; as An-Nur it lights the way. Together they describe the full role of revelation in a human life.