급감rapid decrease; sharp fall; nosedive 급증rapid increase 급행열차express train 긴급emergency 긴급회의emergency meeting 응급실ER; emergency room 초특급being very speedy 특급special express 화급urgency; emergency 구급relief; rescue

추가adding; addition 가공성processability 가공식품processed food 가공품processed goods 가맹점member store; franchise 가습humidification 가습기humidifier 가입joining; signing up; entry 가입비membership fee 가입서registration documents

속도speed 고속high speed 과속speeding 속도위반speeding violation 초고속superhigh speed; ultrafast speed 초속speed per second 쾌속high speed 쾌속선fast boat; high-speed boat 쾌속정fast boat; high-speed boat 풍속wind velocity