crabby vs cranky

crabby

adj
  • Visibly irritated or annoyed; grouchy, irritable, in a foul mood; given to complaining or finding fault in an annoyed way. 

  • crabbed; difficult, or perplexing. 

cranky

adj
  • Grouchy, grumpy, irritable; easily upset. 

  • Not in good working condition. 

  • Synonym of crank (“of a ship: liable to capsize because of poorly stowed cargo or insufficient ballast”) 

  • Not in perfect mental working order; eccentric, peculiar. 

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