What does Aadhya mean?
From Sanskrit adya (आद्या), feminine 'first, primordial, the beginning'; used as an epithet of the primordial Goddess (Adi Shakti / Durga).
What does Diya mean?
From the Hindi दीया (diyā), 'an oil lamp', descended from the Sanskrit dīpa ('lamp, light'). A genuine, everyday Hindi word evoking the lamps of Diwali.