What are some differences between Asthma and COPD

Smoker or ex smoker → Almost every time in COPD but possibly in Asthma Symptoms under age of 65 → Rare in COPD and often in asthma Chronic cough → Common in COPD but not Asthma Nighttime waking with breathlessness → Common in Asthma not in COPD Significant day-day variability of symptoms → Common in Asthma not in COPD