豆薯

豆薯	dòu shǔ	yam bean (Pachyrhizus erosus), a vine with sweet edible root
豆	dòu	legume; pulse; bean; pea (CL:颗,粒) (variant of 豆)
豆	dòu	legume; pulse; bean; pea (CL:颗,粒) / (old) stemmed cup or bowl
薯	shǔ	potato / yam
薯	shǔ	variant of 薯