ginch vs tunnel of love

ginch

noun
  • vagina, pussy. 

  • Underwear, especially men's briefs. 

  • An effeminate man. 

  • A woman, viewed as a potential or actual sexual partner. 

tunnel of love

noun
  • The vagina. 

  • A carnival dark ride for couples in boats, either relaxing and romantic, or spooky (encouraging the couple to cling to one another). 

How often have the words ginch and tunnel of love occurred in a corpus of books? (source: Google Ngram Viewer )