hebetate vs sicken

hebetate

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

adj
  • obtuse; dull 

  • Having a dull or blunt and soft point 

sicken

verb
  • To become weak; to decay; to languish. 

  • To fill with disgust or abhorrence. 

  • To become ill. 

  • To lower the standing of. 

  • To make ill. 

  • To be filled with disgust or abhorrence. 

  • To become disgusting or tedious. 

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