Are yams and sweet potatoes the same?
The skin of a white or yellow yam from Africa is typically rough, fibrous and dark brown.
The sweet potatoes sold in most U.S. grocery stores have thin, smooth, reddish-brown skin, but there are some types that have dark red, tan or even purple skin.
Article source: https://feeds.feedblitz.com/~/638907994/0/usatoday-lifetopstories~Are-yams-and-sweet-potatoes-the-same/