okna

In a sentence

• Patrzę przez okna swojego pokoju.

  I am looking through the windows of my room.

  Here, 'okna' is used as the accusative plural of 'okno,' indicating that it's the object being looked through.

• W moim domu są duże okna.

  There are large windows in my house.

  In this sentence, 'okna' serves as the nominative plural, representing the subject described as existing in the house.

• Nie mogę znaleźć klamki do tych okien.

  I cannot find the handle for these windows.

  Here, 'okien' is the genitive plural form of 'okna,' used because it follows the word 'tych' (these) and signifies possession or association.