Pandemic: A pandemic refers to an outbreak of a disease that occurs over a wide geographic area and affects an exceptionally high proportion of the population.
Quarantine: Quarantine is the practice of separating and restricting the movement of individuals who may have been exposed to a contagious disease in order to prevent its spread.
Contact tracing: Contact tracing involves identifying and monitoring individuals who have come into close contact with someone infected with a contagious disease, such as COVID-19, in order to prevent further transmission.