In ancient books raagas are shown in three differences.
1. Shudh Raag: In a raag when other raagas swaras are present and even then it doesn’t resemble those raagas then it is called as Shudh raagas.
2. Chayalag Raag: In a raag when other raaga swaras are present and if it also resembles those raagas then it is called as Chayalag raag.
3. Sankirna Raag: A raag which is found by combination of two or more raagas then it is called as Sankirna raag.