retardate vs wally

retardate

noun
  • A retarded person; a person with retardation. 

wally

noun
  • A fool. 

  • A large pickled gherkin or cucumber. 

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

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