antiphonal vs reactive

antiphonal

adj
  • Characterized by antiphones or antiphony; incorporating alternate, or responsive singing by a choir split into two parts. 

noun
  • A book of antiphons or anthems sung or chanted at a liturgy; an antiphonary or antiphoner. 

  • An antiphon; a piece sung or chanted in an antiphonal manner. 

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. 

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