explanation vs vagueness

explanation

noun
  • Something that explains, makes understandable. 

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

  • The act or process of explaining. 

vagueness

noun
  • Something which is vague, or an instance or example of vagueness. 

  • The condition of being unclear; vague. 

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