hidrosis vs sweltering

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). 

sweltering

noun
  • The situation of being or feeling hot and humid. 

adj
  • hot and humid; oppressively sticky 

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