The former is commonly called 'Imoarai Kanjincho' (Potato-washing Kanjincho), taken from the last scene, in which Benkei throws the severed head of a guard into a large barrel and tosses it around with a thick stick as if he is washing potatoes.
前者は、弁慶が番卒の首を大きな樽に放り込んで芋洗いのように棒でかき回すという幕切れから俗に「芋洗い勧進帳」と呼ばれる。