aphonic vs thunderstruck

aphonic

adj
  • Of, relating to, or exhibiting aphonia; unable to speak. 

noun
  • A person who has aphonia. 

thunderstruck

adj
  • Astonished, amazed or so suddenly surprised as to be unable to speak. 

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