midge vs vermin

midge

noun
  • any of various small two-winged flies, for example, from the family Chironomidae or non-biting midges, the family Chaoboridae or phantom midges, and the family Ceratopogonidae or biting midges, all belonging to the order Diptera 

  • any bait or lure designed to resemble a midge 

vermin

noun
  • Any one of various common types of small insects or animals which cause harm and annoyance. 

  • Animals that prey on game, such as foxes or weasels. 

  • Obnoxious, or mean and offensive person or people. 

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