COPD comprises chronic disease including _____ and _____

Fill in the blank(s) with correct word

bronchitis, emphysema: Chronic obstructive pulmonary disease (COPD) is a generic term encompassing diseases that cause chronic (long-term) obstruction of air flow. Chronic bronchitis, an inflammation characterized by excessive mucus in the bronchi and a productive (mucus-producing) cough, and emphysema, an irreversible destruction of alveolar walls with dilation of air spaces, are the major components of COPD.