Do the depth of field and depth of focus in photography mean the same thing? What's the difference? Is the depth of field on the focal plane or where? Don’t copy and paste from the Internet

This picture is commonly used to explain the depth of field. From the picture, you can see that the scene is focused on the sensor through the lens. Depth of field is the range (distance) in which the front and rear of the scene can be clear. Depth of focus is the range (distance) in front and rear of the focus point that can be clear when imaging on the sensor. The greater the depth of focus, the greater the depth of field. In terms of images, what can be clear before and after , the range is the same. But numerically speaking, the depth of focus is of course much smaller than the depth of field. What we want is depth of field, but when designing and manufacturing cameras, we solve the problem of depth of focus.