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

통화량telephone traffic 필요량requirement; amount needed 강수량precipitation 교통량traffic volume; traffic density 대량large amount; large volume 량amount 분량quantity 사용량usage; use; amount of use 수량amount; quantity 식사량portion of food