Chronic Obstructive Pulmonary Disease is a disease that is comprised by three related conditions which are chronic bronchitis, chronic asthma, and emphysema. COPD is also known as Chronic Obstructive Lung Disease (COLD), Chronic Airflow Limitation (CAL), and Chronic Obstructive Respiratory Disease (CORD).  In this disease, there is an obstruction in the flow of air both...