cardiovascular disease vs myocardial infarction

cardiovascular disease

noun
  • A disease involving the heart or blood vessels, i.e. arteries and veins, such as coronary heart disease. 

myocardial infarction

noun
  • Necrosis of heart muscle caused by an interruption to the supply of blood to the heart, often as a result of coronary thrombosis. 

How often have the words cardiovascular disease and myocardial infarction occurred in a corpus of books? (source: Google Ngram Viewer )