cardiovascular disease vs myocardial infarct

cardiovascular disease

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

myocardial infarct

noun
  • Synonym of myocardial infarction 

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