error-free vs scrupulous

error-free

scrupulous

adj
  • Having scruples or compunctions. 

  • Wrongly feeling guilt or anxiety about one’s morality; suffering from scrupulosity. 

  • Precise; exact or strict. 

  • Exactly and carefully conducted. 

How often have the words error-free and scrupulous occurred in a corpus of books? (source: Google Ngram Viewer )