Supply
Specific quantity of a product that a seller is willing and able to provide at various prices
Demand
Buyers willingness and ability to purchase products at various price points
Demand curve
Graph of quantities of a product that buyers will purchase at various prices
Supply curve
Graph of quantities of a product that sellers will offer for sale, regardless of demand, at various prices
Equilibrium point
Point at which quantity supply and quantity demanded are equal
Interaction between supply and demand
Price up, QD down, QS up
Price down, QD up, QS down