okupacija

1. occupation
   Moj deda je preživeo nemačku okupaciju Beograda. — My grandfather survived the German occupation of Belgrade.
   Za vreme okupacije škole su bile zatvorene. — During the occupation the schools were closed.
2. (of a protest) occupation; sit-in
   Radnici su pretili okupacijom fabrike. — The workers threatened to occupy the factory.
3. (of an activity, interest) pursuit; main interest
   Njegova glavna okupacija je baštovanstvo. — His main pursuit is gardening.

In the sense 'pursuit' it usually names what occupies someone's time or attention, not their job or profession — for that use zanimanje. Student protests that take over a faculty building are usually called blokada fakulteta in Serbia; okupacija fakulteta is also possible when emphasizing occupation of the building.