パイプ爆弾[paipubakudan] pipe bomb
プラスチック爆弾[purasuchikkubakudan] plastic explosive
宇宙大爆発[uchuudaibakuhatsu] Big Bang (theory)
核爆弾[kakubakudan] nuclear weapon
核爆発[kakubakuhatsu] nuclear explosion

起爆[kibaku] exploding
起爆装置[kibakusouchi] detonator
原子爆弾[genshibakudan] atomic bomb
原子爆発[genshibakuhatsu] atomic explosion
原水爆[gensuibaku] atom and hydrogen bomb

罅割れ[hibiware] crack
罅焼き[hibiyaki] crackleware
罅ぜる[hazeru] to burst open
罅が入る[hibigahairu] to get cracked

罅割れる[hibiwareru] to crack
裂罅[rekka] fissure
罅隙[kogeki] crack