Answer:
Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
Osmosis is the movement of particles from an area of high concentration to an area of low concentration in a liquid through a semi-permeable membrane.
They are similar because they are both the movement of particles from an area of high concentration to an area of low concentration.
They are contrasting because osmosis includes a liquid and a semi-permeable membrane.
