You’ll use the word 프로 (peuro) if you are applying it to describe athletes or players. https://ulotto.kr/%EB%A7%A4%EB%8B%88%EC%A0%80%EC%95%8C%EB%B0%94-%EC%97%AC%EC%84%B1-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81%EC%9D%98-%EC%83%88%EB%A1%9C%EC%9A%B4-%ED%8C%A8%EB%9F%AC%EB%8B%A4%EC%9E%84/
