coupling vs printing press

coupling

noun
  • A device that couples two things together. 

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

  • Sexual intercourse. 

  • Act of joining together to form a couple. 

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

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

printing press

noun
  • A mechanical device used for printing text or images repeatedly. 

  • Synonym of printing house, an institutional or commercial publisher. 

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