grace vs rogation

grace

noun
  • A short prayer of thanks before or after a meal. 

  • An allowance of time granted to a debtor during which he or she is free of at least part of his normal obligations towards the creditor. 

  • Free and undeserved favour, especially of God; unmerited divine assistance given to humans for their regeneration or sanctification, or for resisting sin. 

  • In the games of patience or solitaire: a special move that is normally against the rules. 

  • A grace note. 

  • Charming, pleasing qualities. 

  • Elegant movement; balance or poise. 

  • An act or decree of the governing body of an English university. 

verb
  • To supply with heavenly grace. 

  • To dignify or raise by an act of favour; to honour. 

  • To add grace notes, cadenzas, etc., to. 

  • To adorn; to decorate; to embellish and dignify. 

rogation

noun
  • A deeply serious and somber prayer or entreaty. 

  • The demand, by the consuls or tribunes, of a law to be passed by the people; a proposed law or decree. 

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