Osmosis Vs Diffusion

Osmosis	Diffusion
The process of osmosis takes place through a semi-permeable membrane.	No semi-permeable membrane is needed for the diffusion process.
It involves the movement of the solvent molecules only.	In this, both the solute and the solvent molecules can move.
The molecules of solvent move from a region of lower concentration of solution into a region of higher concentration.	The molecules move from a region of higher concentration into the region of lower concentration.
It is limited to solutions only.	It is common in gases as well as in liquids.
It can be stopped or reversed by applying additional pressure on the higher concentration side.	It cannot be stopped or reversed.