danger zone vs erogenous zone

danger zone

noun
  • the genitals 

  • A specifically hazardous place to be avoided, usually demarcated, such as an area with anti-personnel mines 

erogenous zone

noun
  • A part of the human body that is particularly responsive to sexual stimulation. 

How often have the words danger zone and erogenous zone occurred in a corpus of books? (source: Google Ngram Viewer )