Electric hammer, hand drill, impact rotation, diamond drill, how to distinguish these tools from the appearance, what are their functions, it is best to attach a description, thank you!

Hand drill is the smallest and most basic form. The impact drill is often integrated with the hand electric drill, and there is a small conversion button at the front end. The gear marked with the hammer shape is an impact drill, which produces the effect of drilling while hammering. It is used to drill through hard concrete or stone, and a special drill bit is used. The gear marked with the shape of drill bit is only the function of electric drill; Some switch parts also have forward and reverse conversion buttons; Electric hammer is a more powerful impact drill. Generally, the motor with vertical power at the front end of the handle will be relatively large and will be inserted into the drill. On the other hand, the diamond drill is an electric hammer installed on the basis of a high-power electric hammer, which can introduce cooling water into the drill or be a special diamond drill equipment. You can look up pictures online.