pessimism vs verve

pessimism

noun
  • A general belief that bad things will happen. 

  • The condition of being pessimal. 

  • The doctrine that this world is the worst of all possible worlds. 

verve

noun
  • Enthusiasm, rapture, spirit, or vigour, especially of imagination such as that which animates an artist, musician, or writer, in composing or performing. 

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