bellyaching vs crabbing

bellyaching

noun
  • Whining and complaining, often contrived to evoke pity or shirk responsibility. 

  • Quit your bellyaching and get back to work! 

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. 

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