What does Rudra mean?
From Sanskrit rudra (रुद्र), the fierce Vedic storm deity whose name is traditionally derived from a root meaning 'to roar/cry'; it is a well-known epithet of Shiva. A divine name with connotations of awe-inspiring power.
What does Advik mean?
A modern Sanskrit-derived name generally glossed as 'unique, one of a kind', linked to the idea of advitiya ('without a second, incomparable'). The further association with advaita ('non-duality') is thematic rather than a direct etymology.