devotional vs doxology

devotional

noun
  • A text or piece of music or writing to be used for devotion. 

  • A brief religious service. 

adj
  • Of or pertaining to devotion or worship. 

doxology

noun
  • An expression of praise to God, especially a short hymn sung as part of a Christian worship service. 

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