etiolate vs hebetate

etiolate

verb
  • To become pale or blanched. 

  • To make pale through lack of light, especially of a plant. 

  • To make pale and sickly-looking. 

adj
  • etiolated 

hebetate

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

adj
  • obtuse; dull 

  • Having a dull or blunt and soft point 

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