napping vs unthinking

napping

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

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

unthinking

adj
  • Showing no regard; careless or unconcerned. 

  • Without proper thought; thoughtless. 

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