Osmosis- It is the movement of water molecules from a region of high concentration to a region of low concentration. Swollen feet gets cured when soaked in salt water as it reduces inflammation in the muscles. And, salt particles move inside the feet through the membrane in order to maintain solute – solvent level. These salt particles give relief to the feet muscles.

Diffusion is the movement of solute particles only. Plasmolysis is the movement of water when placed in a hypertonic solution while de-plasmolysis is the movement of water hypotonic solution.