baboon vs chimpanzee

baboon

noun
  • An Old World monkey of the genus Papio, having dog-like muzzles and large canine teeth, cheek pouches, a short tail, and naked callosities on the buttocks. 

  • A foolish or boorish person. 

chimpanzee

noun
  • A member of the genus Pan, including the bonobo which is also known as the pygmy chimpanzee. 

  • Pan troglodytes, a species of great ape in the genus Pan, native to Africa, and believed by biologists to be the closest extant relative to humans along with the bonobo. 

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