expedition vs working time

expedition

noun
  • The process or activities of performing expediter tasks. 

  • An important or long journey, for example a march or a voyage 

  • The group of people making such excursion. 

  • A military journey; an enterprise against some enemy or into enemy territory. 

  • A trip, especially a long one, made by a person or a group of people for a specific purpose 

verb
  • To take part in a trip or expedition; to travel. 

working time

noun
  • The period of time that an individual spends at paid occupational labor. Most countries regulate the working time by law, e.g. by stipulating a maximum number of working hours per week. Exact definition varies by the legislation. 

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