copybook vs exemplary

copybook

noun
  • A series of instructions or data definitions copied into multiple programs from a shared library; boilerplate. 

  • A student's exercise book containing samples of good handwriting to be copied. 

  • A notebook containing blank, often lined, pages for writing answers. 

exemplary

adj
  • Serving as a warning; monitory. 

  • Providing an example or illustration. 

  • Deserving honour, respect and admiration. 

  • Of such high quality that it should serve as an example to be imitated; ideal, perfect. 

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