peppery vs smouldering

peppery

adj
  • Having a fiery temperament. 

  • Resembling or characteristic of pepper, especially in having a spicy taste. 

smouldering

adj
  • Burning slowly, producing smoke but no flame. 

noun
  • The act by which something smoulders; residual heat. 

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