Explanation:

- Private Income: This is the total income earned by individuals and entities in a country, including various forms of earnings like wages, profits, and rents, before taxes.

- Personal Income: This encompasses the total amount of income received by individuals from all sources, including wages, investments, and transfer payments, before personal taxes are deducted.

- Personal Spendable Income: This is the actual amount of income individuals have available to spend after taxes are deducted. It reflects the disposable income for personal spending and savings.

- Per Capita Income: This is the average income earned per person in a given area in a specified year. It is calculated by dividing the total national income by the total population, providing a measure of economic well-being of individuals in a country.