kingship vs royalness

kingship

noun
  • The dignity, rank or office of a king; the state of being a king. 

  • The territory or dominion of a king; a kingdom. 

  • A monarchy. 

royalness

noun
  • Quality of being royal. 

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