piosenki

In a sentence

• Słucham nowych piosenek w radiu.

  I listen to new songs on the radio.

  Here, 'piosenek' refers to the plural form in the genitive case, as the verb 'słucham' governs it in this form.

• Te piosenki są bardzo popularne.

  These songs are very popular.

  In this sentence, 'piosenki' is the plural form in the nominative case, serving as the subject of the sentence.

• Dla kogo są te piosenki?

  For whom are these songs?

  Here, 'piosenki' is in the plural form and appears in the nominative case as part of the predicate.