gonorrhea vs sexually transmitted infection

gonorrhea

noun
  • A sexually transmitted infection caused by Neisseria gonorrhoeae, a species of bacteria (the gonococcus) that affects the mucous membrane of the genital and urinary tracts. 

sexually transmitted infection

noun
  • A sexually transmitted disease, with or without symptoms. 

How often have the words gonorrhea and sexually transmitted infection occurred in a corpus of books? (source: Google Ngram Viewer )