circumspection vs vigilance

circumspection

noun
  • Caution, watchfulness, or vigilance fueled by such awareness. 

  • Attention to all the facts and circumstances of a case; consideration of all that is pertinent. 

vigilance

noun
  • Alert watchfulness. 

  • Close and continuous attention. 

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