human being vs sapien

human being

noun
  • A person; a large sapient, bipedal primate, with notably less hair than others of that order, of the species Homo sapiens. 

  • Any member of the genus Homo, including extinct species. 

sapien

noun
  • A human, a specimen of Homo sapiens. 

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