tranche vs wrap up

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. 

wrap up

verb
  • To curl into a more compact form. 

  • To summarize or recapitulate. 

  • To hide or cover up. 

  • To conclude or finish completely. 

  • To cover or enclose (something) by folding and securing a covering entirely around it. 

  • To put on abundant clothing as protection from the cold; to bundle up. 

  • To tie up; to make too busy to respond. 

  • To cocoon; to surround protectively. 

  • To combine, incorporate or encapsulate into one thing. 

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