Pandemic: A pandemic refers to an outbreak of a disease that affects people over a large geographic area. For example, COVID-19 is a current global pandemic.
Bubonic Plague: Bubonic plague is a severe bacterial infection transmitted by fleas that infest rats. It was one of the deadliest forms of the Black Death.
Epidemic: An epidemic refers to an outbreak of a disease that affects people within a specific community or region. In contrast to pandemics, epidemics are more localized in nature.