What's the difference between snaky and spaky?

Snaky

Definition:

(a.) Of or pertaining to a snake or snakes; resembling a snake; serpentine; winding.
(a.) Sly; cunning; insinuating; deceitful.
(a.) Covered with serpents; having serpents; as, a snaky rod or wand.

Example Sentences:

(1) The plot appeared to be a series of smooth and snaky movements.
(2) The more numerous latter are sneaky, snaky, more concerned with besting people around them than bettering the world.

Definition:

Example Sentences: