The term "jet" (or turbojet) tends to mean that the thrust comes from the exhaust of the engine, and all the turbine's power is put back into the compressor. I

The term "jet" (or turbojet) tends to mean that the thrust comes from the exhaust of the engine, and all the turbine's power is put back into the compressor. In a gas turbine, the turbine captures more energy from the combustion to drive a driveshaft, and the excess exhaust is dumped (or in this case, used as additional thrust for control).