Is there a difference between coronary artery disease and congestive heart failure?

Yes: Coronary artery disease means the arteries of the heart have partial or complete blockage. Congestive heart failure means the heart musle is weak and not pumping blood well enough and fluid back up into the lungs. Often patients with congestive heart failure have coronary artery disease, but not always.

Yes: Coronary artery disease is the blockage of the arteries that supply the heart by cholesterol plaques. This leads to chest pain/angina and reduced heart function. CHF is the heart's inability to pump all the blood that comes to the heart, causing it to back up into the lungs and tissues. CAD is one cause of chf. Other CHF causes are kidney failure, uncontrolled blood pressure, valve dz, virus, etc.