ukras

1. decoration; ornament
   Deca su kačila ukrase na jelku. — The kids were hanging decorations on the tree.
   Ova vaza stoji samo kao ukras. — This vase is just for decoration.
2. (of a person or thing) pride; jewel
   Ta stara crkva je pravi ukras našeg sela. — That old church is the real jewel of our village.

The plural is often used for festive decorations: novogodišnji ukrasi.