- Demanding: It is the desire to have a good or service and the purchasing power to meet it. Demanding varies depending on factors such as price, income, taste, expectation. The demand curve shows the relationship between quantity demanded and price.
- Procurement: It is the placing of a good or service on the market by the producers. It varies depending on factors such as supply, cost, technology, tax, subsidy. The supply curve shows the relationship between the quantity offered and the price.
- Markets: These are the places where buyers and sellers come together to exchange goods and services. Markets can be competitive or monopolized. Market equilibrium occurs at the intersection of the demand and supply curves.