sleepyhead vs torpid

sleepyhead

noun

  • A sleepy person. 

  • The ruddy duck. 

torpid

noun

  • An inferior racing boat, or one who rows in such a boat. 

adj

  • unmoving 

  • dormant or hibernating 

  • lazy, lethargic or apathetic 

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