kajakarza

In a sentence

• Kajakarza widziano, jak płynie po rzece.

  The kayaker was seen paddling down the river.

  Here, 'kajakarza' is used as a masculine singular accusative case of 'kajakarz', denoting the person who is kayaking and is the direct object of the verb.

• Rozmawiałem z kajakarzem o trudach wyprawy.

  I talked to the kayaker about the challenges of the expedition.

  Here, 'kajakarzem' is the masculine singular instrumental case of 'kajakarz', used to indicate the instrumentality or accompaniment relating to the conversation.

• Na brzegu stał kajakarz, który przygotowywał swój sprzęt.

  On the shore stood a kayaker preparing his gear.

  In this sentence, 'kajakarz' is in its nominative case, used as the subject, referring to the person standing on the shore.