Munro vs prominence

Munro

noun
  • Any Scottish mountain having a height of more than 3,000 feet; named after Sir Hugh Thomas Munro, Scottish mountaineer 

name
  • A Scottish surname from Scottish Gaelic, variant of Monroe. 

prominence

noun
  • Autonomous height; relative height or prime factor; a concept used in the categorization of hills and mountains. 

  • A bulge: something that bulges out or is protuberant or projects from a form. 

  • The state of being prominent: widely known or eminent. 

  • A gaseous projection, often loop-shaped, springing from the surface of the Sun or a star. 

  • Relative importance. 

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