remembrance vs retrospect

remembrance

verb
  • To remember; to recall to mind. 

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

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

  • 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 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. 

retrospect

verb
  • To look or refer back to; to reflect on. 

noun
  • Consideration of past times. 

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