Demand Curve:A graphical representation of the relationship between the price of a good and the quantity demanded of that good, with price on the vertical axis and quantity on the horizontal axis.
Equilibrium Price and Quantity: The price and quantity where the quantity supplied and quantity demanded are equal, representing a state of balance in the market.
Shift in Demand: A change in one or more of the determinants of demand that causes a shift in the entire demand curve, either to the right (increase in demand) or to the left (decrease in demand).