[Nerys]

your kidding right? I never said lift was upward. you and only you did. I said lift was a specific for of force that is directional. (whatever it was go read it again) either way LIFT has direction. "UP" is relative. to the propeller FORWARD is UP for all intents and purposes it is the "direction" the lift is directed at.

your tear drop has no direction. forces are equal on all sides. NO LIFT.

No lift in its general use is NOT upward motion. its FORCE in one general direction as a result of a pressure difference around an aero shape.

whether that be a WING lifting an airplane up a FIN on a rocket lifting around the ROLL axis causing a rocket to spin in a propeller pushing/pulling an airplane forward or a CAR exerting a force via a shape based pressure gradient other than neutral. (ie you can lift UP or DOWN or even sideways any which way the pressure gradient and shape dictate.

The wall is you won't separate LIFT from Pressure. I used simpler terms because you did not seem to "grasp" the other terminology at play.

LIFT is by definition a DIRECTIONAL FORCE. if its not directional its NOT LIFT since thats a required component for you to be able to call it LIFT.

please just go look up lift under the CONTEXT of this discussion ie an Aero shape on an airplane or a CAR.