picnic vs polish off

picnic

verb
  • To take part in a 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. 

polish off

verb
  • To finish completely, especially a food (polish the plate with one's tongue) or liquor. 

  • To remove by polishing (rubbing with a fine abrasive). 

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