Is there such a thing as a lung infection, other than pneumonia/cancer?

Yes.many: There are many types of lung infections that can occur. They vary in location, degree of severity, as well as type. They can b viral, bacterial, or inflammatory due to another irritant. They can b localized or diffuse. They can cause severe , mild, or seemingly no symptoms. They can be located inside the lung, in the lining of the lung, or even next to the lung.

Yes, bronchitis: Bronchitis is the infection of the bronchial tumes. Pneumonia is more of an infection that has settled in the terminal ends of the bronchioles and the air sacs(called alveoli).