buckaroo vs gadfly

buckaroo

noun
  • A reckless, headstrong person. 

  • A cowboy; specifically, a working cowboy who generally does not partake in rodeos. 

  • One who sports a distinctive buckaroo style of cowboy clothing, boots, and heritage. 

  • A dollar; a buck. 

  • A style of cowboy boot with a high and uniquely tapered heel. 

gadfly

noun
  • A person who takes without giving back; a bloodsucker. 

  • Synonym of gadabout (“a person who restlessly moves from place to place, seeking amusement or the companionship of others”) 

  • Any dipterous (“two-winged”) insect or fly of the family Oestridae (commonly known as a botfly) or Tabanidae (horsefly), noted for irritating animals by buzzing about them, and biting them to suck their blood; a gadbee. 

  • A person or thing that irritates or instigates. 

  • A person who upsets the status quo by posing novel or upsetting questions, or attempts to stimulate innovation by being an irritant. 

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