Gross National Income (GNI) is a commonly used economic indicator to measure a country's economic development. However, there are also synonyms or alternative terms that have been used to refer to it, such as Gross Domestic Product (GDP), Gross National Product (GNP), and National Income (NI). Although these terms have different definitions and formulas for computation, they all have the same purpose of assessing a country's economic performance. GNI is calculated by adding up the value of all goods and services produced in a country in a year, including income from abroad and deducting the costs associated with producing them. It serves as an important benchmark for policymakers, businesses, and investors to monitor the economic progress of a nation.