change vs reform

change

verb
  • To become something different. 

  • To replace one's clothing. 

  • To replace the clothing of (the one wearing it). 

  • To change hand while riding (a horse). 

  • To transfer to another vehicle (train, bus, etc.) 

  • To make something into something else. 

  • To replace. 

noun
  • The process of becoming different. 

  • A change-up pitch. 

  • An amount of cash, usually in the form of coins, but sometimes inclusive of paper money. 

  • Small denominations of money given in exchange for a larger denomination. 

  • Balance of money returned from the sum paid after deducting the price of a purchase. 

  • A transfer between vehicles. 

  • Any order in which a number of bells are struck, other than that of the diatonic scale. 

  • A replacement. 

reform

verb
  • To put into a new and improved form or condition; to restore to a former good state, or bring from bad to good; to change from worse to better 

  • To form again or in a new configuration. 

  • to reform a profligate man; to reform corrupt manners or morals; to reform a criminal 

  • To return to a good state; to amend or correct one's own character or habits 

noun
  • The change of something that is defective, broken, inefficient or otherwise negative, in order to correct or improve it 

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