explanation vs vindication

explanation

noun
  • The act or process of explaining. 

  • Something that explains, makes understandable. 

  • A resolution of disputed points pursuant to discussion; a mutual clarification of disputed points; reconciliation. 

vindication

noun
  • The act of vindicating or the state of being vindicated. 

  • Evidence, facts, statements, or arguments that justify a claim or belief. 

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