Provide definitions/explanations for the following terms:
$(1)$ Osmosis
$(2)$ Osmotic pressure

(N/A) $(1)$ Osmosis is the spontaneous net movement or diffusion of solvent molecules (usually water) through a selectively permeable membrane from a region of higher water potential (lower solute concentration) to a region of lower water potential (higher solute concentration).
$(2)$ Osmotic pressure is the minimum pressure that must be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane. It is a measure of the tendency of a solution to take in pure solvent by osmosis.