emphasis vs prominence

emphasis

noun
  • Special attention or prominence given to something. 

  • The phonetic or phonological feature that distinguishes emphatic consonants from other consonants. 

  • Special weight or forcefulness given to something considered important. 

  • The use of boldface, italics, or other such formatting to highlight text. 

  • Prominence given to a syllable or words, by raising the voice or printing in italic or underlined type. 

prominence

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

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

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

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

  • Relative importance. 

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