decoding vs explication

decoding

noun
  • An instance of the translation of something into a form more suitable for subsequent processing. 

explication

noun
  • The sense given by an expositor. 

  • The act of explaining; an explanation. 

  • The act of opening or unfolding. 

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