provisional vs vicarial

provisional

adj
  • Temporary, but with the intention of eventually becoming permanent or being replaced by a permanent equivalent. 

noun
  • A postage stamp issued locally before an official issue is released. 

  • An interim denture. 

vicarial

adj
  • Delegated; vicarious 

  • Of or pertaining to a vicar 

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