colophon vs insignia

colophon

noun
  • A printer's or publisher's identifying inscription or logo appearing at the front or end of a book, or the same appearing on the spine or dust jacket. 

  • A page on a website identifying the details of its creation, such as the author's name and the technologies used. 

  • In manuscripts (typically before the invention of printing), the note, usually at the end, left by the scribe who copied it, giving information on their exemplar, where and when the copy was made, and sometimes, their own name. 

insignia

noun
  • A mark or token by which anything is known. 

  • A patch or other object that indicates a person's official or military rank, or membership in a group or organization. 

  • A symbol or token of personal power, status, or office, or of an official body of government or jurisdiction. 

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