bemoan vs languish

bemoan

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

  • To moan or complain about (something). 

languish

verb
  • To live in miserable or disheartening conditions. 

  • To pine away in longing for something; to have low spirits, especially from lovesickness. 

  • To be neglected; to make little progress, be unsuccessful. 

  • To lose strength and become weak; to be in a state of weakness or sickness. 

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