akh vs wantok

akh

noun
  • Brother; a close male friend or associate. 

  • In Egyptian mythology, (roughly) a spirit of the dead that has successfully completed its transition to the afterlife. 

wantok

noun
  • A close comrade; a person with whom one has a strong social bond, usually based on a shared language. 

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