commend vs psalmody

commend

verb
  • To congratulate or reward. 

  • To recommend. 

  • To entrust or commit to the care of someone else. 

  • To praise or acclaim. 

  • To mention by way of courtesy, implying remembrance and goodwill. 

psalmody

verb
  • To celebrate in psalms. 

noun
  • A collection of psalms. 

  • The singing or the writing of psalms. 

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