parody vs unoriginal

parody

noun
  • A work or performance that imitates another work or performance with ridicule or irony. 

verb
  • To make a parody of something. 

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 parody and unoriginal occurred in a corpus of books? (source: Google Ngram Viewer )