scheme vs tranche

scheme

noun
  • A portfolio of pension plans with related benefits comprising multiple independent members. 

  • A council housing estate. 

  • A systematic plan of future action. 

  • An orderly combination of related parts. 

  • A plot or secret, devious plan. 

  • A mathematical structure that enlarges the notion of algebraic variety in several ways, such as taking account of multiplicities and allowing "varieties" defined over any commutative ring (e.g. Fermat curves over the integers). 

  • A chart or diagram of a system or object. 

  • Part of a uniform resource identifier indicating the protocol or other purpose, such as http: or news:. 

  • A representation of the aspects of the celestial bodies for any moment or at a given event. 

verb
  • To plot, or contrive a plan. 

  • To plan; to contrive. 

tranche

noun
  • A pension scheme's or scheme member's benefits relating to distinct accrual periods with different rules. 

  • A distinct subdivision of a single policyholder's benefits, typically relating to separate premium increments. 

  • One of a set of classes or risk maturities that compose a multiple-class security, such as a CMO or REMIC; a class of bonds. Collateralized mortgage obligations are structured with several tranches of bonds that have various maturities. 

  • A slice, section or portion. 

verb
  • To divide into tranches. 

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