This is the 1543rd most frequent Korean word.
교체하고
"교체하고" means "replacing" or "switching."
Here, '교체하고' means to replace (as in substituting something with something else).
부품을 새것으로 교체하고 나서 기계가 잘 작동했어요.
After replacing the part with a new one, the machine worked well.
In this usage, '교체하고' refers to substitution, specifically in a sports context.
야구에서 감독은 투수를 다른 선수로 교체하고 경기를 계속했습니다.
In baseball, the coach replaced the pitcher with another player and continued the game.
This instance uses '교체하고' in a household context, indicating exchanging something old for new.