crabby vs moping

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. 

moping

noun
  • The act of one who mopes. 

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