This is an example of movement. The snakes are writhing around the head, and the eyes show movement in their squinched position of fear.
Moor with emerald cluster, Balthasar Permoser (sculpture), Dinglinger workshop (metal work), Wilhelm Krüger (tortoise shell veneer), Martin Schnell (lacquer, probably), around 1724, From the collection of: Green Vault, Dresden State Art Museums
This is an example of form. The man is 3-D and is a relaxed, walking position.