What is the condition in which the alveoli and air passages fill with puss and other liquid is known as?

The condition in which the alveoli and air passages fill with pus and other fluids is known as pneumonia. This infection can be caused by bacteria, viruses, fungi, or other pathogens, leading to inflammation in the lungs. Symptoms typically include cough, fever, difficulty breathing, and chest pain. Pneumonia can range in severity and may require medical treatment, including antibiotics or other medications.