blameless vs copybook

blameless

adj
  • Free from blame; without fault; innocent 

  • Not meriting blame or censure; undeserving of reproof. 

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. 

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