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

선배senior; veteran 우선priority; preference 대선배senior; veteran 선생teacher; instructor 선약prior appointment 선진being advanced 선진국advanced country; developed country 여선생female teacher 우선first of all; to begin with; before everything 우선적priority

공무원civil servant 사무실office; place of business; workplace 휴무일day off; closed day 근무work 근무자worker 근무지workplace 근무처working place 동사무소dong office 사무office work; clerical work; desk job 사무기기office machine; office equipment