innervation vs sensitivity

innervation

noun
  • The distribution of nerves in an animal, or to any of its parts. 

  • Special activity excited in any part of the nervous system or in any organ of sense or motion; the nervous influence necessary for the maintenance of life, and the functions of the various organs. 

  • The act of innervating or stimulating. 

sensitivity

noun
  • The ability of an organism or organ to respond to external stimuli. 

  • The degree of response of an instrument to a change in an input signal. 

  • The degree of response of a film etc. to light of a specified wavelength. 

  • The quality or state of being sensitive; sensitiveness. 

  • Vulnerability to medical treatment: Synonym of susceptibility. 

  • The probability, in a binary classification test, of a true positive being correctly identified. 

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