hidrosis vs perspiration

hidrosis

noun
  • The formation and excretion of sweat; sweating; perspiration; and (sometimes, more particularly) 

  • Excessive sweating; excessive perspiration (more than would be expected in response to a given stimulus; especially when profuse as a symptom of disease or a side effect of a drug). 

perspiration

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

  • The action or process of perspiring. 

  • Hard work. 

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