litany vs restatement

litany

noun
  • A prolonged or tedious list. 

  • A ritual liturgical prayer in which a series of prayers recited by a leader are alternated with responses from the congregation. 

restatement

noun
  • The act of restating. 

  • A second or subsequent statement. 

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