almanac vs handbook

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. 

handbook

noun
  • A topically organized book of reference on a certain field of knowledge, regardless of size. 

  • A place where illicit bets can be placed. 

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