Quote:
To be accurate, Andy (yes, I know it's kinda off-topic), they are not the same thing. Accurately said, devices that produce downforce (or lift) also produce drag, in two forms: parasitic drag (same as dragging anything through the air; increases as a function of such things as frontal area and skin friction) and induced drag (as a function of the lift; it increases as a function of the angle of attack). Even if you were to make a form infinitely small as to create zero parasitic drag, any lift would produce induced drag.
So, they're not the exact same thing, but they are directly related: more lift generally causes more drag. - GA
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Yes, poorly worded on my part - downforce CREATES drag - is what I should have typed.