cheerful vs cooling

cheerful

adj
  • Bright and pleasant. 

  • Noticeably happy and optimistic. 

cooling

adj
  • That cools. 

  • . Of food or medicine, according to traditional Chinese medicine: serving to cool or calm the body. 

noun
  • A decrease in temperature. 

  • Refrigeration. 

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