Final answer:
Pneumonia is an inflammatory lung condition that disrupts gas exchange by filling the alveoli with fluid, treated with antibiotics if bacterial. COPD is a chronic respiratory condition that damages lung tissue and alveolar elasticity, mainly caused by smoking; quitting smoking can help manage the disease.
Step-by-step explanation:
Pneumonia is an inflammatory condition of the lungs primarily affecting the alveoli, which become filled with fluid, impeding gas exchange. Common symptoms include coughing, chest pain, difficulty breathing, and fever. The inflammation and fluid build-up inhibit the efficient transfer of oxygen and carbon dioxide between the alveoli and the capillaries. Treatment usually involves antibiotics if bacterial. On the other hand, Chronic Obstructive Pulmonary Disease (COPD) is a chronic inflammation leading to damaged lung tissue and reduced elasticity of the alveoli, making it difficult to breathe, especially while exhaling. The main cause of COPD is tobacco smoking, and while there is no cure, stopping smoking can reduce the progression rate.