explanation vs position paper

explanation

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

  • Something that explains, makes understandable. 

  • The act or process of explaining. 

position paper

noun
  • An essay or report which expresses a position, conclusion, or recommendation concerning a contested issue or undecided question and which usually contains arguments or reasons in support of this position. 

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