social security vs subvention

social security

noun
  • A specific such social benefit providing income in retirement or disability. 

  • Those benefits paid under such a system. 

  • A system whereby the state either through general or specific taxation provides various benefits to help ensure the wellbeing of its citizens. 

subvention

noun
  • A subsidy; provision of financial or other support. 

verb
  • To subsidise. 

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