atter vs pest

atter

noun
  • Poison, venom, especially of a venomous animal. 

  • Pus, corrupt or morbid matter from a sore or wound. 

  • A scab; a dry sore. 

  • Epithelium produced on the tongue. 

verb
  • To venom; sting. 

  • To discharge, as a sore; clot; curdle; cake. 

pest

noun
  • An animal regarded as a nuisance, destructive, or a parasite, vermin. 

  • Any destructive insect that attacks crops or livestock; an agricultural pest. 

  • An annoying person, a nuisance. 

  • An invasive weed. 

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