助番[sukeban] leader of a female gang
ブロック番号[burokkubangou] block number
暗唱番号[anshoubangou] personal identification number
一貫番号[ikkanbangou] serial number
一番[ichiban] best

一番[hitotsugai] pair
一番鶏[ichibandori] first cockcrowing
一番手[ichibante] first player
一番乗り[ichibannori] leader of a charge
一番線[ichibansen] track no. 1

汚職[oshoku] corruption
下級職[kakyuushoku] subordinate post
下職[shitashoku] subcontractor
家職[kashoku] one's trade or profession
解職[kaishoku] discharge

官職[kanshoku] government service
管理職[kanrishoku] management
閑職[kanshoku] leisurely post
休職[kyuushoku] temporary retirement
求職[kyuushoku] job hunting