aphonic vs implicit

aphonic

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

noun
  • A person who has aphonia. 

implicit

adj
  • Implied indirectly, without being directly expressed 

  • Contained in the essential nature of something but not openly shown 

  • Having no reservations or doubts; unquestioning or unconditional; usually said of faith or trust. 

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