odometer vs timekeeper

odometer

noun
  • An instrument, usually embedded within the speedometer of a vehicle, that measures the distance the vehicle has traveled since production. 

  • A wheel used by surveyors, which registers distance traveled. 

timekeeper

noun
  • A device that shows the time; a timepiece. 

  • A person (or something controlled by a person) that is or isn't punctual. 

  • A person who keeps records of the hours of attendance of employees. 

  • A person who records the time elapsed in a sporting event. 

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