Yahoo vs jokeman

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!. 

jokeman

noun
  • A clown, someone who says or does idiotic things. 

  • Someone who likes to play pranks. 

  • Someone who takes serious things as jokes. 

  • A comedian, someone who makes a lot of jokes. 

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