almanac vs documentation

almanac

noun
  • A handbook, typically published annually, containing information on a particular subject 

  • A book or table listing nautical, astronomical, astrological or other events for the year; sometimes, but not essentially, containing historical and statistical information. 

  • A GPS signal consisting of coarse orbit and status information for each satellite in the constellation. 

documentation

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

  • Documentary evidence and sources. 

  • 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 almanac and documentation occurred in a corpus of books? (source: Google Ngram Viewer )