retrofit vs transform

retrofit

verb
  • To give new characteristics or make alterations (to someone or something) to suit them to changed circumstances. 

  • To supply (a device, structure, etc.) with new components or parts that were not previously available or installed; to modernize. 

  • Synonym of backport (“to retroactively supply a fix or feature to a previous version of a software product at the same time or after supplying it to the current version.”) 

  • To supply a device, structure, etc., with new components or parts that were not previously available or installed. 

  • To add or substitute (new components or parts) that were not previously available for or installed in a device, structure, etc. 

noun
  • An act of supplying a device, structure, etc., with new components or parts that were not previously available or installed; a retrofitting. 

  • A change made to a device, structure, etc., by introducing components or parts that were not previously available or installed. 

transform

verb
  • To undergo a transformation; to change in appearance or character. 

  • To change greatly the appearance or form of. 

  • To subject to the action of a transformer. 

  • To subject to a transformation; to change into another form without altering the value. 

  • To subject (a cell) to transformation. 

  • To change the nature, condition or function of; to change in nature, disposition, heart, character, etc.; to convert. 

noun
  • A transform fault. 

  • An operation (often an integration) that converts one function into another. 

  • A function so produced. 

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