Plane uses wings that are shaped more efficiently for areo-dynamic lift.
Plane also uses very powereful jet engine to pushes itself forward. When the forward speed of the Boeing reaches take-off speed of about 180 kph , the areodynamic lift on its huge two wings is more than enough to lift its own weight, plus the weight of 500 passengers and their luggages, plus the weight of a full tank of petrol. Once in the air, the pilot can reduce power to the jet engine and continually adjusts the effective incline angle of the wings to obtain perfect balance for a level flight. The function of the diffuser and compressor is to raise the air density and hence higher volume of air at the engine intake. The exhaust gas is then channel to the nozzle where high speed flow exits from it.