assume vs forsake

assume

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

  • To receive, adopt (a person) 

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

  • To take on a position, duty or form 

  • To adopt (an idea or cause) 

forsake

verb
  • To abandon, to give up, to leave (permanently), to renounce (someone or something). 

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