automation vs machinery

automation

noun
  • The act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls. 

machinery

noun
  • The machines constituting a production apparatus, in a plant etc., collectively. 

  • The collective parts of something which allow it to function. 

  • The working parts of a machine as a group. 

  • The literary devices used in a work, notably for dramatic effect 

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