순서順序 order; sequence 공공질서公共秩序 public order 교통질서交通秩序 traffic order 질서秩序 order 무질서無秩序 disorder 법질서法秩序 law and order 서곡序曲 prelude 서두序頭 start; beginning 서막序幕 opening act 서문序文 preface; foreword; introduction 서설序說 introduction 서수序數 ordinal number 서수사序數詞 ordinal numeral 서열序列 rank; grade 서열화序列化 ranking; ordering; sequencing 연공서열年功序列 seniority rule; seniority system 위계질서位階秩序 order of rank; hierarchy 장유유서長幼有序 seniority; hierarchical order between adults and children