Is the pain that occurs in angina pectoris and myocardial infarction the same?

Chest pain: Typically the pain of angina pectoris resolves with rest and lasts just a few minutes at most. Heart attack pain typically is a resting pain and is like angina but worse. They are both caused by myocardial ischemia but the angina ischemia is reversible. The heart attack ischemia results in death of some of the heart's muscle.

Continuum: Angina can be quite severe and respond to rest, oxygen, nitroglycerin. And fully recover with no muscle death. The pain fibers are the same source. Some myocardial infarction can be asymptomatic all the way to the worst, ominous, pain ever! there is heart muscle death as the defining entity.