This is the 5774th most frequent Korean word.
보완
Improvement or supplementation.
Here, '보완' refers to the act of improving or making additions to something to make it better.
이 소프트웨어는 보완 작업이 필요합니다.
This software needs improvement.
In this context, '보완' means to address or compensate for a deficiency or problem.
그 문제를 보완하려면 추가 자료가 필요합니다.
To address that issue, additional materials are required.
Here, '보완' is used to signify complementing or compensating for each other's weaknesses in a cooperative manner.