ant vs vermin

ant

noun
  • Any of various insects in the family Formicidae in the order Hymenoptera, typically living in large colonies composed almost entirely of flightless females. 

  • A Web spider. 

verb
  • To rub insects, especially ants, on one's body, perhaps to control parasites or clean feathers. 

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 ant and vermin occurred in a corpus of books? (source: Google Ngram Viewer )