Whats the difference between a Hoodie and a Turtleneck?

Whats the difference between a Hoodie and a Turtleneck? Hoodie is just an additional hat. There are not many differences between them, but their functions are not quite the same. Hoodie is focused on fashion style, and round-necked turtleneck sweater is concerned about their own body defects of the decoration, if both wear well, then…