dating vs timekeeping

dating

noun
  • The setting of a date on which an event or transaction is to take place or take effect. 

  • A form of romantic courtship typically between two individuals with the aim of assessing the other's suitability as a partner in an intimate relationship or as a spouse. 

  • An estimation of the age of an artifact, biological vestige, linguistic usage, etc. 

timekeeping

noun
  • The measurement of time, or determining what the local time is. 

  • The quality of being punctual, keeping to a set time. 

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