akh vs good old boy

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. 

good old boy

noun
  • A male friend or chum, especially a schoolmate; a man with an established network of friends who assist one another in social and business situations; a decent, dependable fellow. 

  • A friendly, unambitious, relatively uneducated, sometimes racially biased or misogynistic white man who embodies the stereotype of the folksy culture of the rural southern USA. 

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