hoard vs pocket billiards

hoard

noun
  • A hoarding (billboard). 

  • A cache of valuable objects or artefacts; a trove. 

  • A hoarding (temporary structure used during construction). 

  • A hidden supply or fund. 

  • A projecting structure (especially of wood) in a fortification, somewhat similar to and later superseded by the brattice. 

verb
  • To amass, usually for one's own private collection. 

pocket billiards

noun
  • Synonym of pocket pool 

  • Any of a family of billiards games played on a specific class of billiards table, having six receptacles called pockets along the rails, in which balls are deposited as the main goal of play. 

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