incisive vs penetrative

incisive

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

  • Accurate and sharply focused. 

  • Intelligently analytical and concise. 

  • Quickly proceeding to judgment and forceful in expression. 

  • Of or relating to the incisors. 

penetrative

adj
  • That can or does physically penetrate something; piercing, penetrating. 

  • That can penetrate opposition defences. 

  • Pertaining to sexual activity involving penetration by the penis. 

  • Displaying insight or discrimination; acute; penetrating. 

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