сата

In a sentence

• Имам два сата на зиду.

  I have two clocks on the wall.

  Here, 'сата' is the plural form in genitive case of the word 'сат' (clock) because it follows a number (двa – 'two') that requires the genitive form.

• Чекао сам два сата на станици.

  I waited for two hours at the station.

  In this context, 'сата' is in the genitive case, which is used here to express duration of time.

• Мој сат је престао да ради пре два сата.

  My watch stopped working two hours ago.

  'Сата' is again in the genitive case, used alongside the number два (two), referring to the time duration.