dirge vs plaint

dirge

verb
  • To sing dirges 

noun
  • A mournful poem or piece of music composed or performed as a memorial to a dead person. 

  • A song or piece of music that is considered too slow, bland or boring. 

plaint

noun
  • An accusation. 

  • A complaint. 

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