implicit vs signified

implicit

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

  • Implied indirectly, without being directly expressed 

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

signified

noun
  • The concept or idea evoked by a sign. 

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