What does Om mean?
From Sanskrit Om (ॐ), the sacred primordial sound and mantra regarded in Hindu tradition as the essence of the universe. Used as a name it carries that whole spiritual weight.
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.