cardiovascular disease vs infarction

cardiovascular disease

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

infarction

noun
  • The process which causes an infarct. 

  • An infarct (an area of ischemic necrosis). 

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