カード会員[kaadokaiin] (credit) card holder
ユダヤ教会堂[yudayakyoukaidou] synagogue
委員会[iinkai] committee
医会[ikai] medical society
医師会[ishikai] medical association

井戸端会議[idobatakaigi] content-free chat
育英会[ikueikai] scholarship society
一期一会[ichigoichie] once-in-a-lifetime encounter (hence should be cherished as such)
一般会計[ippankaikei] general accounting and finance
一般社会[ippanshakai] general public

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