hebetate vs unexciting

hebetate

adj
  • obtuse; dull 

  • Having a dull or blunt and soft point 

verb
  • To render obtuse; to dull; to blunt. 

unexciting

adj
  • Not exciting 

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