This is the 104th most frequent Serbian word.
деце
"Деце" in English means "children" (genitive plural form of "деца").
In this sentence, 'деца' (deca) is used as the subject of the sentence to indicate a group of children engaging in the action of playing.
Деца се играју у парку.
The children are playing in the park.
Here, 'децу' (decu) is the object of the preposition 'за' (za), indicating the target or beneficiaries of the action.
Књиге су остављене за децу.
The books are left for the children.
In this example, 'децу' (decu) is used as the object of the verb 'поносни' (ponosni), specifically showing possession or relation to the parents.