ebullience vs heaviness

ebullience

noun
  • A boiling or bubbling up; an ebullition. 

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

heaviness

noun
  • The state of being heavy; weight, weightiness, force of impact or gravity. 

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