transform vs variate

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. 

variate

verb
  • To alter; to vary; to make or become different. 

noun
  • The measured magnitude of a variable. 

  • random variable 

  • A variable, often the set of x values plotted on a graph. 

  • A measurable quantity capable of taking on a number of values. 

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