elicitation vs elucidation

elicitation

noun
  • The act of eliciting. 

  • Something that is elicited. 

elucidation

noun
  • A making clear; the act of elucidating or that which elucidates, as an explanation, an exposition, an illustration 

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