ear to the ground vs incisive

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. 

incisive

adj
  • Accurate and sharply focused. 

  • Intelligently analytical and concise. 

  • Having the quality of incising, cutting, or penetrating, as with a sharp instrument. 

  • Quickly proceeding to judgment and forceful in expression. 

  • Of or relating to the incisors. 

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