Yahoo vs yahoo

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!. 

yahoo

verb
  • To search using the Yahoo! search engine. 

  • To give a cry of "yahoo". 

noun
  • A rough, coarse, loud or uncouth person 

  • A humanoid cryptid said to exist in parts of eastern Australia, and also reported in the Bahamas. 

intj
  • A battle cry. 

  • An exclamation of joy or enjoyment. 

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