confirmation vs documentation

confirmation

noun
  • A verification that something is true or has happened. 

  • An official indicator that things will happen as planned. 

  • A ceremony of sealing and conscious acknowledgement of the faith in many Christian churches, typically around the ages of 14 to 18; considered a sacrament in some churches, including Catholicism, but not in most Protestant churches. 

  • An act whereby something conditional or voidable is made sure and unavoidable, especially the possession of an estate. 

documentation

noun
  • Documentary evidence and sources. 

  • Documents that explain the operation of a particular machine or software program. 

  • Something transposed from a thought to a document; the written account of an idea. 

  • Comments that explain the usage of individual functions, libraries and blocks of code. 

  • A documentary. 

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