elegy vs psalmody

elegy

noun
  • A mournful or plaintive poem; a funeral song; a poem of lamentation. 

  • A composition of mournful character. 

  • A classical poem written in elegiac meter 

psalmody

noun
  • The singing or the writing of psalms. 

  • A collection of psalms. 

verb
  • To celebrate in psalms. 

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