bemoan vs recommend

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. 

recommend

verb
  • To bestow commendation on; to represent favourably; to suggest, endorse or encourage as an appropriate choice. 

  • To make acceptable; to attract favor to. 

  • To advise, propose, counsel favorably 

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