A maple seed (samara) is a lopsided airfoil: a dense seed body on one side, a long thin wing on the other. Released with no spin it tumbles chaotically for a fraction of a second, but that asymmetry converts the tumble into a self-sustaining spin — the same "autorotation" that lets a helicopter descend safely with its engine off.
Once the spin locks in, the rotating wing sweeps through the air like a tiny rotor blade and generates real aerodynamic lift, which partially cancels gravity. That is why the samara's terminal descent speed ends up well below the free-fall speed of a non-spinning object of the same weight, shown in the "Free-fall (no spin)" readout for comparison.
A wider or more sharply angled wing spins more slowly but sweeps a larger disc, extracting more lift per rotation — raise the wing slider to see rotation rate drop while the lift coefficient and descent time both rise. Wind speed pushes the spinning seed sideways far more than it would a tumbling one, because the extra time aloft gives the wind longer to act, which is exactly how these seeds travel away from the parent tree.