dullness vs vitality

dullness

noun
  • The quality of not perceiving or kenning things distinctly. 

  • The quality of being uninteresting; boring; humorless or irksome. 

  • The quality of being slow of understanding things; stupidity. 

  • Lack of interest or excitement. 

  • The lack of visual brilliance; want of sheen. 

  • bluntness. 

vitality

noun
  • Energy or vigour. 

  • The capacity to live and develop. 

  • That which distinguishes living from nonliving things; life, animateness. 

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