form vs retrofit

form

verb
  • To give (a shape or visible structure) to a thing or person. 

  • To provide (a hare) with a form. 

  • To assume (a certain shape or visible structure). 

  • To mould or model by instruction or discipline. 

  • To constitute, to compose, to make up. 

  • To put together or bring into being; assemble. 

  • To treat (plates) to prepare them for introduction into a storage battery, causing one plate to be composed more or less of spongy lead, and the other of lead peroxide. This was formerly done by repeated slow alternations of the charging current, but later the plates or grids were coated or filled, one with a paste of red lead and the other with litharge, introduced into the cell, and formed by a direct charging current. 

  • To create (a word) by inflection or derivation. 

  • To take shape. 

noun
  • A specific way of performing a movement. 

  • A quantic. 

  • A class or year of school pupils (often preceded by an ordinal number to specify the year, as in sixth form). 

  • Constitution; mode of construction, organization, etc.; system. 

  • Show without substance; empty, outside appearance; vain, trivial, or conventional ceremony; conventionality; formality. 

  • A specimen document to be copied or imitated. 

  • A grouping of words which maintain grammatical context in different usages; the particular shape or structure of a word or part of speech. 

  • A blank document or template to be filled in by the user. 

  • Level of performance. 

  • Regularity, beauty, or elegance. 

  • The combination of planes included under a general crystallographic symbol. It is not necessarily a closed solid. 

  • A window or dialogue box. 

  • Characteristics not involving atomic components. 

  • A thing that gives shape to other things as in a mold. 

  • Established method of expression or practice; fixed way of proceeding; conventional or stated scheme; formula. 

  • The boundary line of a material object. In painting, more generally, the human body. 

  • A criminal record; loosely, past history (in a given area). 

  • The inherent nature of an object; that which the mind itself contributes as the condition of knowing; that in which the essence of a thing consists. 

  • An order of doing things, as in religious ritual. 

  • The shape or visible structure of a thing or person. 

  • The den or home of a hare. 

  • An infraspecific rank. 

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. 

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