razmeniti

1. (with someone, mutually) to exchange; to swap
   Razmenili smo brojeve telefona. — We exchanged phone numbers.
   Na sastanku smo razmenili iskustva. — We shared our experiences at the meeting.
2. (of money) to break a note; to get change
   Možete li mi razmeniti 2000 dinara? — Can you break 2000 dinars for me?

The thing exchanged is a direct object in the accusative: razmeniti poklone. For changing one currency into another, promeniti or zameniti is normally used (promeniti evre u dinare); razmeniti novac can mean either exchanging currency or changing money into smaller denominations.