sweatiness vs swelter

sweatiness

noun
  • The state or condition of being sweaty. 

swelter

noun
  • Intense heat. 

verb
  • To perspire greatly from heat. 

  • To cause to faint, to overpower, as with heat. 

  • To suffer terribly from intense heat. 

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