adapt vs variate

adapt

verb
  • To fit by alteration; to modify or remodel for a different purpose; to adjust 

  • To make suitable; to make to correspond; to fit or suit 

  • To make by altering or fitting something else; to produce by change of form or character 

  • To make oneself comfortable to a new thing. 

adj
  • Adapted; fit; suited; suitable. 

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 adapt and variate occurred in a corpus of books? (source: Google Ngram Viewer )