一区[ikku] district
街区[gaiku] block (of land)
学区[gakku] school district
管区[kanku] jurisdiction
共産地区[kyousanchiku] communist area

教区[kyouku] parish
区域[kuiki] limits
区会[kukai] ward assembly
区会議員[kukaigiin] ward assemblyman

アジア太平洋地域[ajiataiheiyouchiiki] Asia-Pacific region
ルーラル地域[ruuraruchiiki] rural area
安全域[anzeniki] safety margin
異域[iiki] foreign lands
域外[ikigai] outside the area

域内[ikinai] inside the area
円域[eniki] yen bloc
音域[oniki] singing range
音域外[onikigai] outside the singing range
海域[kaiiki] area of ocean