graduate vs retrofit

graduate

verb
  • To change gradually. 

  • To taper, as the tail of certain birds. 

  • To be certified as having earned a degree from; to graduate from (an institution). 

  • To mark (something) with degrees; to divide into regular steps or intervals, as the scale of a thermometer, a scheme of punishment or rewards, etc. 

  • To be recognized by a school or university as having completed the requirements of a degree studied at the institution. 

  • To bring to a certain degree of consistency, by evaporation, as a fluid. 

  • To prepare gradually; to arrange, temper, or modify by degrees or to a certain degree; to determine the degrees of. 

  • The man graduated in 1967. 

  • To certify (a student) as having earned a degree 

  • Of an idol: to exit a group; or of a virtual YouTuber, to leave a management agency; usually accompanied with "graduation ceremony" send-offs, increased focus on the leaving member, and the like. 

adj
  • relating to an academic degree 

  • graduated, arranged by degrees 

  • holding an academic degree 

noun
  • A person who is recognized as having completed any level of education. 

  • A person who is recognized by a university as having completed the requirements of a degree studied at the institution. 

  • A graduated (marked) cup or other container, thus fit for measuring. 

  • A person who is recognized by a high school as having completed the requirements of a course of study at the school. 

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 graduate and retrofit occurred in a corpus of books? (source: Google Ngram Viewer )