Pneumonia and bronchitis are two different diseases, which can be judged in two main ways, as follows: 1. Clinical symptoms are different: the clinical symptoms of pneumonia are relatively heavy, with chills, high fever, cough, coughing and sputum as the main manifestations, often accompanied by chest pain, and even blood in the sputum or hemoptysis. The symptoms of bronchitis are relatively mild, with coughing and sputum as the main manifestations, although fever can also occur, but the degree of fever is often relatively light; 2.