There are nine names of Devi Durga –ShailPutri, Brahmacharini, etc; etc and hence known as Nava-Durga. During Navaratri festivals, all the Devis are worshipped in their particular avatars and celebrated all over the world with fanfare. Devi accepts all the names and proves itself in all forms. When you sit in meditation and deep inside, you will realize the different shakes and their mantras. Devi Maa is not only the knowledge & wisdom but also Bhranti (disbelief). Not only Lakshmi but also kchudha( desire &craving ) and Trishna(acquisitiveness). Our life is inspired by the three prime tattvas – Tamo, Rajo, and Sattva – known as the tri-shakti of this universe. By worshiping Durga at the time of Navaratri, there establish the harmonization among the three while trying to carry Sattva to the highest.