pester vs toad

pester

noun
  • A bother or nuisance. 

verb
  • To bother, harass, or annoy persistently. 

toad

noun
  • A contemptible or unpleasant person. 

  • An ugly person. 

  • An amphibian, a kind of frog (order Anura) with shorter hindlegs and a drier, wartier skin, many in family Bufonidae. 

verb
  • To expel (a user) permanently from a MUD or similar system, so that their account is deleted. 

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