discreet vs ear to the ground

discreet

adj
  • Respectful of privacy or secrecy; exercising caution in order to avoid causing embarrassment; quiet; diplomatic. 

  • Not drawing attention, anger or challenge; inconspicuous. 

ear to the ground

noun
  • The practice or characteristic of carefully gathering information; a state or mindset of attentiveness. 

  • Pursuing the practice or having the characteristic of carefully gathering information; well-informed. 

How often have the words discreet and ear to the ground occurred in a corpus of books? (source: Google Ngram Viewer )