lackadaisical vs napping

lackadaisical

adj
  • Showing no interest, vigor, determination, or enthusiasm. 

  • Lazy; slothful; indolent. 

napping

noun
  • The act of taking a nap or short sleep. 

  • The act or process of raising a nap, as on cloth. 

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