해외foreign country; overseas 해외여행overseas travel; trip abroad 외국foreign country 외국어foreign language 외국인foreigner 외출going out; outing 과외extra work 교외suburb; outskirts 교외out-of-school; off-campus 국외outside a territory

신호code; sign 신호등traffic light; traffic signal 통신communication; correspondence 확신belief; conviction; confidence 미신superstition 발신mailing; sending; transmission 발신인addresser; sender 수신인addressee 신념belief; faith; conviction 신뢰trust; faith