heart attack vs heart failure

heart attack

noun
  • An acute myocardial infarction, sometimes fatal, caused by the sudden occurrence of coronary thrombosis, which obstructs the blood supply to the heart and leads to necrosis of heart muscle tissue. 

  • Death or failure. 

heart failure

noun
  • The cessation of the heartbeat; cardiac arrest. 

  • The chronic inability of the heart to pump a sufficient amount of blood throughout the body, leading to a pooling of blood and shortness of breath. 

How often have the words heart attack and heart failure occurred in a corpus of books? (source: Google Ngram Viewer )