climax vs coupling

climax

noun
  • The culmination of sexual pleasure, an orgasm. 

  • A rhetorical device in which a series is arranged in ascending order. 

  • The final term of a rhetorical climax. 

  • A culmination or acme: the last term in an ascending series 

  • The culmination of a narrative's rising action, the turning point. 

  • The culmination of ecological development, whereby species are in equilibrium with their environment. 

verb
  • To reach or bring to a climax (in any sense). 

coupling

noun
  • Sexual intercourse. 

  • The property of physical systems that they are interacting with each other 

  • Act of joining together to form a couple. 

  • A device that couples two things together. 

  • The degree of reliance between two or more software modules. 

  • A connection between two electronic circuits such that a signal can pass between them. 

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