antiphonal vs antiphonary

antiphonal

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

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

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

antiphonary

noun
  • An antiphonal. 

adj
  • Pertaining to an antiphon or antiphony. 

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