Katyayani (Sanskrit: कात्यायनी, romanized: Kātyāyanī, lit. 'she who is of Katya') is a form of the Hindu goddess Mahadevi, venerated as the slayer of the tyrannical asura Mahisha. She is the sixth of the Navadurga, and is worshipped on the sixth day of Navaratri.
In Shaktism, she is associated with the fierce forms of Shakti or Durga, a warrior goddess, which also includes Bhadrakali and Chandika.
Chandi (Sanskrit: चण्डी, IAST: Caṇḍī) or Chandika (IAST: Caṇḍika) is a Hindu deity. Chandika is a form of goddess Durga. She shares similarities with the Goddess Chamunda, not only in name but also in attributes and iconography. Due to these similarities, some consider them to be the same deity, while others view them as different manifestations of Mahadevi. Both are often associated with other powerful goddesses like Durga, Katyayani, Kali and Kalaratri. The Goddess is particularly revered in Gujarat.
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