rogation vs solace

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. 

solace

noun
  • A source of comfort or consolation. 

  • Comfort or consolation in a time of loneliness or distress. 

verb
  • To allay or assuage. 

  • To give solace to; comfort; cheer; console. 

  • To take comfort; to be cheered. 

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