implicit vs unstated

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. 

unstated

adj
  • Not explicitly stated; unspoken. 

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