They are not the same. Here's an answer from the Library of Congress:
http://www.loc.gov/rr/scitech/mysteries/sweetpotato.html
Sweet potatoes generally have a higher carbohydrate content than regular potatoes.
The color difference between yams and sweet potatoes is that yams have a darker, rougher skin and flesh that ranges from white to purple, while sweet potatoes have a smoother skin and flesh that can be white, yellow, orange, or purple.
the skin colour of course
Sweet potatoes and yams are two different types of root vegetables. Sweet potatoes have a smoother skin and come in various colors like orange, white, or purple. Yams have rough, bark-like skin and are starchier than sweet potatoes. In the United States, what are often labeled as "yams" are actually sweet potatoes.
Yes. It doesn't make much of a difference.
The main differences between a potato and a sweet potato are their appearance, taste, and nutritional content. Potatoes have a smooth skin and white flesh, while sweet potatoes have a rough, reddish-brown skin and orange flesh. Sweet potatoes are sweeter in taste and have more vitamins and minerals than regular potatoes.
Yes, you can substitute pumpkin with sweet potatoes. Just make your sweet potatoes are fully cooked so they are the proper consistency. If you do this, you probably won't be able to tell the difference once your bread is baked.
Yams and sweet potatoes are different plants with distinct characteristics. Yams have rough, dark brown skin and white flesh, while sweet potatoes have thin, smooth skin and orange flesh. Yams are starchier and drier, while sweet potatoes are moister and sweeter. In the United States, what are often labeled as "yams" are actually sweet potatoes.
You expect to find potatoes in a supermarket.
Sweet potatoes are vegetables.
Sweet potatoes and yams are often confused, but they are actually different plants. Sweet potatoes have smooth skin and come in various colors, while yams have rough, bark-like skin and are starchier. Sweet potatoes are sweeter and have a softer texture when cooked, while yams are drier and starchier.
Sweet potatoes are not made from regular potatoes, but grow as a separate tuberous vegetable.