crabbing vs kvetching

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. 

kvetching

noun
  • Persistent complaining. 

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