전화telephone 통화talking over the telephone 대화dialogue; conversation; talk 전화call; phone call 전화기telephone 전화번호phone number 통화량telephone traffic 통화료telephone service charge; call charge 회화talk; dialogue; conversation; chat 공중전화pay phone

문제problem; question 숙제homework 제목title 과제task 과제물homework 문제점problem; drawback 문제지exam paper 문제집workbook 별문제irrelevant problem 소제목subtitle; subheading