perspiration vs sudorific

perspiration

noun
  • A saline fluid secreted by the sweat glands; sweat. 

  • The action or process of perspiring. 

  • Hard work. 

sudorific

noun
  • A medicine that produces sweating. 

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

  • That produces sweating. 

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