exempt vs vindicate

exempt

verb
  • To grant (someone) freedom or immunity from. 

noun
  • One of four officers of the Yeomen of the Royal Guard, having the rank of corporal; an exon. 

  • One who has been released from something. 

  • A type of French police officer. 

adj
  • Free from a duty or obligation. 

  • Not entitled to overtime pay when working overtime. 

vindicate

verb
  • To provide justification for. 

  • To lay claim to; to assert a right to; to claim. 

  • To clear of an accusation, suspicion or criticism. 

  • To maintain or defend (a cause) against opposition. 

  • To justify by providing evidence. 

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