dull-headed vs hebetate

dull-headed

adj

  • dull-witted; not clever 

hebetate

adj

  • Having a dull or blunt and soft point 

  • obtuse; dull 

verb

  • To render obtuse; to dull; to blunt. 

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