eulogy vs testimonial

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. 

testimonial

noun
  • A tribute given in appreciation of someone's service etc. 

  • A statement, especially one given under oath; testimony 

  • A match played in tribute to a particular player (who sometimes receives a proportion of the gate money). 

  • A written recommendation of someone's worth or character 

adj
  • Serving as testimony. 

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