calorific vs sultry

calorific

adj
  • Relating to or producing heat or other energy. 

  • High in calories and thus likely fattening. 

  • Relating to calories. 

sultry

adj
  • Hot and humid. 

  • Very hot and dry; torrid. 

  • Sexually enthralling. 

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