With the appropriate head button, you can run diesel.
With the appropriate head button and ignition system, you can run pump or white gas. I'd forget about this one as some manufacturers are now making gas burners in the nitro sizes
With the standard head button and glow plug, you can run nitro fuel

One thing you do need to remember is that not all aircraft engines are the same:
Heli motors are similar to aircraft but make more torque(if I've been told correctly) since they will be turning a big rotor. This could be the opposite if they were designed to run through a gearbox
Ducted fan motors run at a low torque but at very high RPM and therefore won't spin a standard prop effectively
Standard aircraft engines are designed to spin up to the MAXIMUM EFFECTIVE SPEED of the props it's intended to run. Installing a larger prop can ruin the crank and or bearings while a smaller will overspeed the motor and destroy it