bemoan vs whimper

bemoan

verb
  • To moan or complain about (something). 

  • To be dismayed or worried about (someone), particularly because of their situation or what has happened to them. 

whimper

verb
  • To cry with a low, whining, broken voice; to whine; to complain. 

  • To say something in a whimpering manner. 

  • To cry or sob softly and intermittently. 

noun
  • A low intermittent sob. 

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