chine vs tranche

chine

verb
  • To cut through the backbone of; to cut into chine pieces. 

  • To chamfer the ends of a stave and form the chine. 

noun
  • The edge or rim of a cask, etc., formed by the projecting ends of the staves; the chamfered end of a stave. 

  • A steep-sided ravine leading from the top of a cliff down to the sea. 

  • The top of a ridge. 

  • The spine of an animal. 

  • A hollowed or bevelled channel in the waterway of a ship's deck. 

  • The back of the blade on a scythe. 

  • A piece of the backbone of an animal, with the adjoining parts, cut for cooking. 

  • A longitudinal line of sharp change in the cross-section profile of the fuselage or similar body. 

  • A sharp angle in the cross section of a hull. 

tranche

verb
  • To divide into tranches. 

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

  • A slice, section or portion. 

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