This is the 7198th most frequent Korean word.
주전
"주전" means "starter" (as in a starting player in sports).
Here, '주전' refers to a starting or main player in a sports team.
그는 팀의 주전 선수입니다.
He is the team's main player.
In this sentence, '주전' is being used to describe players who start the game.
이 경기에서 주전으로 뛰는 선수들을 주목하세요.
Pay attention to the players starting in this match.
Here, '주전 선수' indicates the primary or main players, contrasting with substitute players.