fleabrain vs wally

fleabrain

noun
  • A stupid or foolish person 

wally

noun
  • A fool. 

  • A large pickled gherkin or cucumber. 

adj
  • unusually pale; misaligned, sideways-looking, affected by strabismus. 

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