highborn vs regnant

highborn

adj
  • Of, pertaining to, or befitting people of high social standing. 

  • Of superior or premium quality; magnificent; expensive. 

regnant

adj
  • Dominant; holding sway; having particular power or influence. 

  • Reigning, ruling; currently holding power. 

  • of a monarch, ruling in one's one right; often contrasted with consort and dowager 

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