A market is where buyers and sellers transact business for the exchange of particular goods and services and where the prices for these goods and services tend towards equality. In order for a market to "clear" or function properly, the quantity of goods and services demanded and supplied must be equal at some given price. At any particular point in time, markets can be in "equilibrium" or "disequilibrium" depending on whether or not aggregate supply equals aggregate demand at the prevailing price.