lather vs sudorific

lather

noun
  • Foam from profuse sweating, as of a horse. 

  • A state of agitation. 

  • The foam made by rapidly stirring soap and water. 

verb
  • To form lather or froth, as a horse does when profusely sweating. 

  • To cover with lather. 

  • To beat or whip. 

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 lather and sudorific occurred in a corpus of books? (source: Google Ngram Viewer )