policy vs system

policy

noun
  • A principle of behaviour, conduct etc. thought to be desirable or necessary, especially as formally expressed by a government or other authoritative body. 

  • The grounds of a large country house. 

  • Wise or advantageous conduct; prudence, formerly also with connotations of craftiness. 

  • A document containing or certifying this contract. 

  • A number pool lottery 

  • A contract of insurance. 

verb
  • To regulate by laws; to reduce to order. 

system

noun
  • A comprehensive and logically organized set of propositions or philosophical beliefs. 

  • A set of equations involving the same variables, which are to be solved simultaneously. 

  • A set of alters, or the multiple (“the individual with multiple personalities due to, for example, a dissociative personality disorder”) who contains them. 

  • Preceded by the word the: the mainstream culture, controlled by the elites or government of a state, or a combination of them, seen as oppressive to the individual. 

  • A set of staves linked by a brace that indicate instruments or sounds that are to be played simultaneously. 

  • A collection of organized things; a whole composed of relationships among its members. 

  • A planetary system; a set of planets orbiting a star or star system 

  • A set of rules for a tabletop roleplaying game. 

  • A method or way of organizing or planning. 

  • A set of hardware and software operating in a computer. 

  • A set of body organs having a particular function. 

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