A disease is a disorder or condition that affects the normal functioning of the body. In the context of this question, it refers to an illness or sickness that can be transmitted from person to person.
Related terms
Epidemic: An epidemic is when a disease spreads rapidly and affects many individuals within a specific community or region.
Pandemic: A pandemic is an epidemic that has spread across multiple countries or continents, affecting large populations worldwide.
Immunity: Immunity refers to the ability of an individual's body to resist or fight off infections and diseases. It can be acquired naturally or through vaccination.