ant vs cockroach

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. 

cockroach

noun
  • A black or brown straight-winged insect of the order Blattodea. 

  • A Tutsi. 

  • A person from New South Wales. 

  • A person or a member of a group of people regarded as undesirable and rapidly procreating. 

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