What does Ranbir mean?
A Sanskrit/Hindi compound of rana (रण, 'battle') and vira (वीर, 'hero, brave one'), giving 'a warrior brave in battle'.
What does Aniket mean?
From Sanskrit aniketa (अनिकेत), 'homeless, having no fixed abode', used as an epithet of Shiva (who belongs everywhere and nowhere). The meaning carries an ascetic, all-encompassing sense rather than a negative one.