Roasting involves cooking foods, like meat, potatoes, chicken, and vegetables, that already have a solid structure before you begin cooking. Baking, however, refers to foods without initial structure, like cupcakes and cookies

It is complicated. There are no exact ansers. For an exact answer you would consult a specialized dictionary or a cookbook. In ordinary everyday life, both of them are done in an oven and are quite similar. In our own oven, the "bake" setting only turns on the heating element in the bottom of the often, while the "roast" setting turns on the top element AND turns on the convection fan. The American Heritage Dictionary defines "bake" as "To cook (food) with dry heat, especially in an oven," and "roast" as "To cook with dry heat, as in an oven or near hot coals" which tells us only that are very similar! The word "bake" usually means that the food is inside an oven and being heated on all sides at once. Bread and cake are "baked." You don't "roast" a cake. If the food is being cooked outdoors over a wood fire, or charcoal, then it is being "roasted." It may be roasted in an oven whose heating elements are adjusted to produce a similar effect. Meat is usually "roasted." Chicken can be either "baked" or "roasted."

Baked is used mostly when referring to self made goods made from combining ingredients and putting them in the oven, usually using flour as one of the ingredients (e.g. cakes, bread, Biscuits). With 'bake', for example, you turn dough into cake, biscuits, etc. Roast is when you put a ready product (e.g meat, nuts, biltong) in the oven or direct heat to cook it through, but the product doesn't turn into something else e.g Raw chicken remains chicken, just roasted.

To bake = 这是一种使用烤箱的烹饪方法，通常这种方法用于面包和糕点。 To roast = 这是一种在烤箱中烹制肉类的方法，有时也可以烹制土豆或其他蔬菜。 方法基本相同，但一个动词用于肉类，另一个动词用于面包或糕点。

Baking is mostly with breads, pastries, biscuits and anything based on dough. Generally speaking. Roasting is basically like barbecuing or anything like that.