buty

In a sentence

• Mam nowe buty.

  I have new shoes.

  In this sentence, 'buty' refers to footwear in general, specifically the shoes the speaker has acquired recently.

• Te buty są bardzo wygodne.

  These shoes are very comfortable.

  Here, 'buty' is being described as comfortable, indicating its use as referring to specific footwear.

• Potrzebuję butów na specjalne okazje.

  I need shoes for special occasions.

  In this case, 'butów' (the plural genitive form) is used to express the need for footwear suitable for certain circumstances.