What's the difference between COPD and bronchitis?

Chr. Vrs. Acute. COPD is caused by emphysema, chronic bronchitis and asthma. Chronic bronchitis means cough and increased sputum at least for three consecutive months. Acute bronchitis is recent cough sometimes caused by viruses or bacteria associated to increase in sputum production with or without wheezing or shortness of breath which may not be associated to COPD even though copders have multiple exacerbations.
Bronchitis is COPD. COPD stands for chronic obstructive pulmonary disease. There are 2 categories within this emphysema and bronchitis.
Difference... Copd, chronic obstructive pulmonary disease, is caused typically by smoking. It is incurable and slowly progressive. There are 2 types of bronchitis: acute and chronic. Acute bronchitis is an infection of the airways whereas chronic bronchitis is a form of copd.