potres

1. (in the phrase potres mozga) concussion
   Posle pada dobio je lakši potres mozga. — After the fall he got a mild concussion.
2. (in life, society) shock; upheaval
   Njena smrt bila je veliki potres za porodicu. — Her death was a great shock to the family.
   Zemlju su pogodili ozbiljni politički potresi. — The country was hit by serious political upheavals.
3. (of the ground) tremor; earthquake
   Potres jačine 5,2 stepena osetio se i u Beogradu. — A tremor of magnitude 5.2 was also felt in Belgrade.
   Jutros je zabeležen slab potres kod Kraljeva. — A weak tremor was recorded near Kraljevo this morning.

In Serbia an earthquake is usually called zemljotres; potres is also used in this sense (especially in the news), and in Croatian it is the usual word for an earthquake.