1. She is considered to be the other half of Lord Shiva. While Shiva is the form, Durga is the expression.
2. Her 8 arms signify 8 directions. Each of her arms holds a weapon which signifies that She protects her devotees from all evil.
3. She is seen riding a lion. While a lion signifies power, Maa Durga, who is sitting on a lion is the ultimate power, Shakti.
4. Goddess Durga is known as Triyambake which means She has three eyes. Her three eyes signify Agni, Surya and Chandra.
5. By her very name, Maa Durga can be conceived as the supreme power. The word ‘Durga’ means invincible.
6. Given that she is the supreme power, Maa Durga was able to destroy Mahishasura, the demon who took various forms. She is therefore known as Mahishasura Mardini.