A turbine produces mechanical work from the pressure or kinetic enrgy of a moving fluid. They differ from reciprocating motors in that the fluid flows through continuously.
Turbines like compressors can be axial or radial.
The earliest water turbines were water wheels.
These extract mechanical work from water pressure.
Commonly known as windmill extract work from the wind.
These extract mechanical work from steam.
Used in most gas turbines and steam turbines
Used in turbochargers and small gas turbines.