contiguity vs intercourse

contiguity

noun
  • A state in which two or more physical objects are physically touching one another or in which sections of a plane border on one another. 

intercourse

verb
  • To have sexual intercourse. 

noun
  • Dealings with people, including commerce and trade. 

  • Sexual intercourse usually involving humans. 

  • Dealings between countries. 

  • Communication, conversation. 

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