remembrance vs testimonial

remembrance

noun
  • That which serves to keep in or bring to mind; a memento, a memorial, a souvenir, a token; a memorandum or note of something to be remembered. 

  • The act of remembering; a holding in mind, or bringing to mind; recollection. 

  • Something remembered; a person or thing kept in memory. 

  • The power of remembering; the reach of personal knowledge; the period over which one's memory extends. 

  • The state of being remembered, or held in mind; memory, recollection. 

verb
  • To remember; to recall to mind. 

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 remembrance and testimonial occurred in a corpus of books? (source: Google Ngram Viewer )