2016-07-20 cap=頭 語源 escape / 頭が外にでる→逃げる、逃れる cf. Several prisoners have escaped from the jail. capital / 頭となるもの→資本金、大文字、首都 cf. His business was started with a capital of $3000. decapitate / 頭が離れる→首を切る cf. The president's aim was to decapitate the terrorist.