사회자host; master of ceremonies; chairperson; moderator 상사superior; boss 총사령관supreme commander; commander-in-chief 사령관commander 사령부command headquarters 사령탑conning tower 사법justice; being judicial; being legal; law enforcement 사법권judicial power; jurisdiction 사법부judicial branch; the judiciary; the judicature 사회host; presiding

교과서textbook 도서관library 독서reading 서류document; papers 서점bookstore 엽서postcard 추천서letter of recommendation; letter of reference 가입서registration documents 계산서check; bill 계약서contract; written agreement