sudation vs sweating

sudation

noun
  • Perspiration; sweat (fluid). 

  • The process of perspiring. 

sweating

noun
  • The production and evaporation of a watery fluid called sweat that is excreted by the sweat glands in the skin of mammals. 

  • Mucilage, especially of cocoa. 

  • The gentle heating of vegetables in oil or butter. 

adj
  • Giving off sweat. 

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