Antique gas engine battery ignition, the difference between buzz coil and low tension coil ignition

In this video I do my best to explain the difference between spark plug ignition with a buzz coil and igniter ignition with a low tension coil. It doesn't matter if it is a Model T Ford buzz coil or one made for a stationary engine, all buzz coils do the same job. Also it doesn't matter if your low tension is a vintage one made for stationary engines, a new reproduction coil, or in some cases a 12v automotive coil.