Population Pyramid: A graphical representation that shows the distribution of age groups within a population. It helps us understand the size and structure of different generations.
Dependency Ratio: The ratio between the economically dependent population (such as children and elderly) and the working-age population. In the case of the Baby Boom generation, there was a high dependency ratio due to a large number of young children at one point.
Social Security: A government program designed to provide financial support to retired or disabled individuals. The retirement of the Baby Boomers has put pressure on social security systems around the world.