Navdurga represent nine forms of devi durga They are classified as follows
Four of them represent Sato gun.Four of them represent Rajo gun.One represent Tamo gun
Rajasic - Chandraghanta, Kushmanda, Skandamata, Katyayani. They travel on Simha vahan
Satvic - Shailaputri,Brahmacharini,Mahagauri,Siddhidaatri.Two of them travel on Lord Shiva's Vrishabh vahan and two of the devis are without vahan
Tamasic - Kaal Ratri.She travels on gadharbh vahan
