I would like to know if COPD and acid reflux disease is the same

No.
Chronic obstructive pulmonary disease (COPD) refers to chronic bronchitis and emphysema, a pair of two commonly co-existing diseases of the lungs in which the airways become narrowed. This leads to a limitation of the flow of air to and from the lungs causing shortness of breath. In contrast to asthma, the limitation of airflow is poorly reversible and usually gets progressively worse over time.
Acid reflux disease is defined as chronic symptoms or mucosal damage produced by the abnormal reflux in the oesophagus.
The most-common symptoms of GERD are:
Heartburn
Regurgitation
Trouble swallowing
Less-common symptoms include:
Pain with swallowing
Excessive salivation
Nausea
Chest pain