byword vs unoriginal

byword

noun
  • Someone or something that stands as an example (i.e. metonymically) for something else, by having some of that something's characteristic traits. 

  • A nickname or epithet. 

  • A characteristic word or expression; a word or phrase associated with a person or group. 

  • A proverb or proverbial expression, common saying; a frequently used word or phrase. 

  • An object of notoriety or contempt, scorn or derision. 

unoriginal

noun
  • A person or work that does not exhibit originality. 

adj
  • Not being the first or earliest version of something, not original. 

  • Lacking originality. 

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