ardor vs ebullience

ardor

noun
  • Spirit; enthusiasm; passion. 

  • Intense heat. 

  • Great warmth of feeling; fervor; passion. 

ebullience

noun
  • The quality of enthusiastic or lively expression of feelings and thoughts. 

  • A boiling or bubbling up; an ebullition. 

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