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

약about; approximately; around 약속promise; appointment; pledge 예약reservation; booking 가계약provisional contract 계약contract; agreement 계약금down payment; earnest; deposit 계약서contract; written agreement 계약자contractor; contracting party 선약prior appointment 약정contract; stipulation