This is the 9853rd most frequent Korean word.
골프공
Golf ball.
In this sentence, '골프공' is used as a direct object to express what the subject enjoys hitting.
나는 골프공을 치는 것이 정말 재미있어요.
I really enjoy hitting golf balls.
Here, '골프공' is the object of the action '주워서', specifying what was picked up and given.
그는 골프공을 주워서 내게 주었다.
He picked up the golf ball and gave it to me.
In this usage, '골프공' is the subject of the sentence, describing the entity performing the action of gleaming.