| Osmotic pressure | Oncotic pressure |
| Osmotic pressure is the pressure exerted by a solution when it is in equilibrium with a second solution. | Oncotic pressure is the pressure exerted by proteins in a solution. |
| Osmotic pressure is determined by the concentration of the solute. | Oncotic pressure is determined by the concentration of proteins in the solution. |
| Osmotic pressure is measured in units of pressure. | Oncotic pressure is measured in units of force per unit area. |
| Osmotic pressure is affected by temperature. | Oncotic pressure is not affected by temperature. |
| Osmotic pressure is important in biological systems, as it affects the movement of water and solutes across cell membranes.. | Oncotic pressure is important in biological systems, as it affects the movement of proteins across cell membranes. |