exuberance vs flatness

exuberance

noun
  • The quality of being exuberant; cheerful or vigorous enthusiasm; liveliness. 

  • An abundance of wealth. 

  • An overflowing quantity; superfluousness. 

  • An instance of exuberant behaviour. 

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 

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