Disease - Any abnormal condition that affects all or part of an organism, resulting in symptoms such as pain or loss of function.⏎
Contagion - A general term for any disease-causing infectious agent spread by direct or indirect contact.⏎
Epidemic - An often sudden increase in the level of disease in a specific population over a given period of time.⏎
Fungi - A taxonomic kingdom of spore-forming organisms distinct from plants, animals, and bacteria that includes microorganisms such as yeast and molds, as well as mushrooms.⏎
Encephalitis - Inflammation of the brain, often caused by a virus.⏎