walker vs zed

walker

noun
  • A zombie. 

  • A batsman or batswoman who directly walks off the field when out without waiting for the umpire's decision. 

  • A male escort who accompanies a woman to an event. 

  • A walking frame or baby walker. 

  • A prostitute, streetwalker. 

  • A kind of military robot or mecha with legs for locomotion. 

  • The agent noun of to walk: a person who walks or a thing which walks, especially a pedestrian or a participant in a walking race. 

  • A shoe designed for comfortable walking. 

  • A gressorial bird. 

  • A forester. 

zed

noun
  • A zombie. 

  • Something Z-shaped. 

  • The name of the Latin-script letter Z. 

  • Sleep. 

verb
  • To sleep or nap. (Compare zzz, catch some z's.) 

  • To zigzag; to move with sharp alternating turns. 

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