nesporazum

1. misunderstanding
   Izvinite, došlo je do nesporazuma. — Sorry, there's been a misunderstanding.
   Sve je to bio običan nesporazum. — It was all just a misunderstanding.
2. disagreement; falling-out
   Imali su nesporazum oko novca. — They had a disagreement over money.

Commonly used in doći do nesporazuma: došlo je do nesporazuma, "a misunderstanding has arisen".