2 verses have
azaabu
in Edition English Transliteration / Ash-Shu'araa (The Poets)

26:156Wa laa tamassoohaa bisooo'in fa yaakhuzakum 'azaabu Yawmin 'Azeem

26:189Fakazzaboohu fa akhazahum 'azaabu Yawmiz zullah; innahoo kaana 'azaaba Yawmin 'Azeem