ک ف فk-f-f
(ن) كَفَّ يَكُفُّ كَفًّاkaffa yakuffu kaffan (original form: كَفَفَ يَكْفُفُkafafa yakfufu): to hold back a thing with the palm, to restrain. ﴿وَكَفَّ اَيْدِيَ النَّاسِ عَنْكُمْ﴾ (Al-Fatḥ 48:20)
كَفٌّkaff, dual كَفَّانِkaffāni (noun, ism dhāt): the palm of the hand. ﴿فَاَصْبَحَ يُقَلِّبُ كَفَّيْهِ﴾ (Al-Kahf 18:42)
كَآفَّةٌkāffah (active participle, ism fāʿil, with the tāʾ of intensification): that which holds back (gathering all in one place); hence as a circumstantial accusative (ḥāl), "all together, all of them". ﴿اُدْخُلُوْا فِي السِّلْمِ كَآفَّةً﴾ (Al-Baqarah 2:208); ﴿وَمَآ اَرْسَلْنٰكَ اِلَّا كَآفَّةً لِّلنَّاسِ﴾ (Sabaʾ 34:28)