reactive vs respondent

reactive

adj
  • that reacts or responds to a stimulus 

  • Characterized by induction or capacitance rather than resistance. 

  • that readily takes part in reactions 

  • Reacting to the past rather than anticipating the future, not predictive. 

respondent

adj
  • Disposed or expected to respond; answering; according; corresponding. 

noun
  • A defendant, especially in a case instituted by a petition or in appellate and divorce proceedings. 

  • A person replying to a questionnaire. 

  • One who responds; one who replies. 

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