Thank you John and others.
So in simple terms; the pressure changes caused by an aerofoil section as it moves through the air 'turns' the "incoming" airstream through a significant angle, which produces a reaction according to Newton's 3rd law.
The majority of the pressure changing is done by the upper surface of a wing, but the wing is not 'sucked' upwards as such,
and
Both wing and propellor are doing the same thing by the same mechanism - one to produce lift, the other to produce thrust.
