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

安全[anzen] safety
安全域[anzeniki] safety margin
安全運転[anzenunten] safe driving
安全器[anzenki] safety device
安全期[anzenki] safe period

安全教育[anzenkyouiku] safety education
安全性[anzensei] safety
安全対策[anzentaisaku] safety measure
安全第一[anzendaiichi] safety first
安全地帯[anzenchitai] safety zone

雨子[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
御菓子[okashi] confections
お子さん[okosan] (someone else's) child
お子様[okosama] child (someone else's)
山梔子[kuchinashi] Cape jasmine (Gardenia jasminoides)

させ子[saseko] whore
梃子摺る[tekozuru] to have much trouble
螺子回し[nejimawashi] screwdriver
硝子[garasu] glass
獅子女[sufinkusu] sphinx

完結[kanketsu] conclusion
完結文[kanketsubun] sentence
完済[kansai] full payment
完熟[kanjuku] completely ripe or mature
完遂[kansui] to accomplish

完成[kansei] complete
完成品[kanseihin] finished product
完全[kanzen] perfection
完全コピー[kanzenkopii] exact copy
完全主義者[kanzenshugisha] perfectionist

一坪本社[hitotsubohonsha] small company headquarters located in Tokyo simply for name value
一般社会[ippanshakai] general public
印刷社[insatsusha] printing company
運送会社[unsougaisha] shipping company
映画社[eigasha] movie company

下請会社[shitaukegaisha] subcontractor
下層社会[kasoushakai] the underworld
下流社会[karyuushakai] lower classes
会社[kaisha] company
会社員[kaishain] company employee