flatness vs vitality

flatness

noun
  • slim-tailedness or platykurticity 

  • The state of being bland : dullness 

  • Lack of bouquet and freshness of a wine, through too much aeration or infection with film yeasts 

  • The state of being flat 

  • The state of being two-dimensional; planar : planarity 

  • Mattness, the quality of a painted surface which scatters or absorbs the light falling on it, so as to be substantially free from gloss or sheen 

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 flatness and vitality occurred in a corpus of books? (source: Google Ngram Viewer )