perspiring vs sudorific

perspiring

adj
  • Producing perspiration; sweating. 

noun
  • The act of producing perspiration. 

sudorific

adj
  • In a state of perspiration; covered in sweat; sudoriferous, sweaty. 

  • That produces sweating. 

noun
  • A medicine that produces sweating. 

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