It's not at all like either of those. It looks like a miniature blender. The difference is that the blade screws on the *top* instead of the bottom of the cup you put the food into, then you flip it upside down to screw it onto the base. The blade looks like a blender blade with the difference that one part of it scrapes along the bottom to make sure it gets every last piece.

It's particularly designed for turning green tea leaves into powder, making health drinks, or blending dips/sauces. I saw a different brand of mill advertising that you can make instant soup stock with it by sticking in dried shiitake and kombu and powdering it. (Of course, a Japanese person would add dried fish, too.)

The odd thing about it is that there is no "start" button. It's like a popcorn maker--when you plug it in, it's automatically on. You set the cup/blade into the socket, and as soon as you twist it into place it starts up. You have to twist it back to make it stop.