assume vs feign

assume

verb
  • To authenticate by means of belief; to surmise; to suppose to be true, especially without proof 

  • To receive, adopt (a person) 

  • To adopt a feigned quality or manner; to claim without right; to arrogate 

  • To take on a position, duty or form 

  • To adopt (an idea or cause) 

feign

verb
  • To make a false show or pretence of; to counterfeit or simulate. 

  • To hide or conceal. 

  • To make an action as if doing one thing, but actually doing another, for example to trick an opponent; to feint. 

  • To imagine; to invent; to pretend to do something. 

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