akh vs mucker

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. 

mucker

noun
  • Friend, acquaintance. 

  • A person who removes muck (waste, debris, broken rock, etc.), especially from a mine, construction site, or stable. 

  • A comrade; a friendly, low-ranking soldier in the same situation. 

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