emotion vs sensitivity

emotion

noun
  • A reaction by a non-human organism with behavioral and physiological elements similar to a person's response. 

  • A person's internal state of being and involuntary physiological response to an object or a situation, based on or tied to physical state and sensory data. 

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 emotion and sensitivity occurred in a corpus of books? (source: Google Ngram Viewer )