Yahoo vs pisher

Yahoo

noun
  • One of a race of brutes, who look and act similar to men, inhabiting the same land as the civilized Houyhnhnms. 

  • An employee of the Internet company Yahoo!. 

pisher

noun
  • A young child, usually male. 

  • Somebody who is inept at a task or new to a job. 

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