beetlebrain vs gonk

beetlebrain

noun
  • A stupid person. 

gonk

noun
  • A stupid, ignorant, and/or boorish person. 

  • A prostitute's client. 

  • A small furry toy like an ersatz teddy bear, popularized in wartime when production of real teddies stops. 

  • A sleep; a nap. 

verb
  • To sleep. 

  • To lie; to tell an untruth 

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