dropping vs lassitudinous

dropping

noun
  • The act of something that drops or falls. 

  • Something dropped; a droplet. 

  • A piece of animal excrement; dung. 

lassitudinous

adj
  • Characterized by lassitude. 

  • Tending to bring about lassitude. 

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