kąpieli

In a sentence

• Po długim dniu pracy relaksuję się podczas gorącej kąpieli.

  After a long day at work, I relax during a hot bath.

  In this sentence, 'kąpieli' is used in the context of a genitive case, demonstrating the possession or relation with the action of 'taking a bath'—'the (taking of) a bath'.

• Czy przygotowałeś wszystko do kąpieli dziecka?

  Have you prepared everything for the baby's bath?

  'Kąpieli' appears here in the dative case, indicating that the preparations are being directed or related to the act of giving a bath to the baby.

• Zapach olejków do kąpieli rozchodzi się po całym mieszkaniu.

  The scent of bath oils spreads throughout the apartment.

  Here, 'kąpieli' is used in the genitive case to describe possession or association, in this case, 'oils for (to be used in) the bath'.