dinosaur vs reliquiae

dinosaur

noun
  • any of the animals belonging to the clade Dinosauria, especially those that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct. 

  • Any extinct reptile, not necessarily belonging to Dinosauria, that existed between about 230 million and 65 million years ago. 

  • Something or someone that is very old or old-fashioned, or is not willing to change and adapt. 

  • any member of the clade Dinosauria other than birds. 

  • Anything no longer in common use or practice. 

reliquiae

noun
  • Remains, especially of fossil organisms. 

  • Artifacts; things made or modified by human art. 

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