Referring to two different things with the same name seems to be a thing that is common in the food industry.
In some parts of the world certain grains other than maize are referred to corn and in other parts of the world maize and corn means the same. Likewise here in this article we are told that some sweet potatoes are referred to as yam in some parts of the world. After reading this article, hopefully you would never mix up a sweet potato and yam again.
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