How would you compare and contrast osmosis and diffusion?

Osmosis is the movement of water molecules across a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration, while diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Both processes involve the movement of molecules from an area of higher concentration to an area of lower concentration, but osmosis specifically refers to the movement of water molecules.