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

방room 책방bookstore 하숙방room in a boarding house 공부방study 난방기heater 냉방air-conditioning 냉방기cooler; air-conditioner 냉방병excessive air conditioning syndrome 다방coffee shop; coffeehouse 대화방chat room