picnic vs vocation

picnic

noun
  • An easy or pleasant task. 

  • An informal social gathering, usually in a natural outdoor setting, to which the participants bring their own food and drink. 

  • The meal eaten at such a gathering. 

  • A cut of pork from the shoulder area (above the front leg) of a pig. 

verb
  • To take part in a picnic. 

vocation

noun
  • An inclination to undertake a certain kind of work, especially a religious career; often in response to a perceived summons; a calling. 

  • An occupation for which a person is suited, trained or qualified. 

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