eulogy vs threnode

eulogy

noun
  • An oration to honor a deceased person, usually at a funeral. 

  • Speaking highly of someone or something; the act of praising or commending someone or something. 

threnode

noun
  • A threne, or threnody; a dirge; a funeral song. 

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