<s>[INST] What is the difference between asthma and COPD (chronic obstructive lung disease)? [/INST] COPD is a collective name for chronic bronchitis and emphysema, two diseases that are almost always caused by smoking. Many of the symptoms of COPD are similar to those of asthma (e.g. breathlessness, wheezing, production of too much mucus, coughing). COPD is generally a more serious disease than asthma, because the changes in the airways are much more difficult to treat, and it usually has a worse outcome. Unfortunately, COPD can cause greater long-term disability and have a greater effect on the heart and other organ systems than asthma. Source: Ginasthma. Link: https://ginasthma.org/about-us/faqs/. Field: Lung Disease. Disease: Asthma </s>