formulaic vs unoriginal

formulaic

adj
  • Closely following a formula or predictable pattern; imitative, not original. 

unoriginal

adj
  • Lacking originality. 

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

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

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