계절season 명절national holiday 사계절four seasons 계절병seasonal disease 계절성seasonality 계절적being seasonal 계절적seasonal 기본예절basic manners 시절days; the time 예절courtesy; manners

감소reduction 감소율reduction ratio 감점point deduction 급감rapid decrease; sharp fall; nosedive 증감fluctuation 탕감cut; reduction; curtailment; slashing 가감addition and subtraction; adjustment 가감승제addition, subtraction, multiplication and division 감량weight reduction; weight loss 감면reduction; exemption