incisive vs probing

incisive

adj
  • Intelligently analytical and concise. 

  • Accurate and sharply focused. 

  • 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. 

probing

adj
  • That investigates or explores deeply; that attempts to elicit information that is concealed. 

noun
  • The action of investigating or exploring. 

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