deep pockets vs pocket billiards

deep pockets

noun
  • Pockets long enough inside to accommodate more than average number or size of contents. 

  • An ample supply of money, especially money which one is willing to spend; the possessor of such money. 

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 deep pockets and pocket billiards occurred in a corpus of books? (source: Google Ngram Viewer )