chimpanzee vs lemur

chimpanzee

noun
  • 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. 

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

lemur

noun
  • Any strepsirrhine primate of the infraorder Lemuriformes, superfamily Lemuroidea, native only to Madagascar and some surrounding islands. 

  • Any of the genus Lemur, represented by the ring-tailed lemur (Lemur catta). 

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