memoir vs sitrep

memoir

noun
  • Any form of narrative describing the personal experiences of a writer. 

  • A biography; a book describing the experiences of a subject from personal knowledge of the subject or from sources with personal knowledge of the subject. 

  • An autobiography; a book describing the personal experiences of an author. 

sitrep

noun
  • a situation report. 

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