crabbing vs crabby

crabbing

noun
  • A process of scouring cloth between rolls in a machine. 

  • The act or art of catching crabs. 

  • The fighting of hawks with each other. 

crabby

adj
  • crabbed; difficult, or perplexing. 

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

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