COPD: Chronic Bronchitis vs. Emphysema COPD is an umbrella term that commonly includes chronic bronchitis and emphysema, two conditions with very different presentations. Chronic Bronchitis (Blue Bloater) Productive cough Chronic Obstructive Pulmonary Disease (COPD) UF Health The role of pulmonary vascular endothelium in chronic obstructive pulmonary disease (COPD): Does endothelium play a role in the onset and progression of COPD? Emphysema: What Is It, Difference From COPD, and More Osmosis