diva vs martyr

diva

noun
  • A person who may be considered or who considers herself (or by extension himself) much more important than others, has high expectations of others and who is extremely demanding and fussy when it comes to personal privileges. 

  • Any female celebrity, usually a well known singer or actress. 

martyr

noun
  • One who sacrifices their life, station, or something of great personal value, for the sake of principle or to sustain a cause. 

  • One who willingly accepts being put to death for adhering openly to one's religious beliefs; notably, saints canonized after martyrdom. 

  • One who suffers greatly and/or constantly, even involuntarily. 

verb
  • To make someone into a martyr by putting them to death for adhering to, or acting in accordance with, some belief, especially religious; to sacrifice on account of faith or profession. 

  • To persecute. 

  • To torment; to torture. 

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