ad hominem vs ipsedixitism

ad hominem

adj

  • Of or relating to this kind of fallacious objection. 

adv

  • In an ad hominem manner. 

noun

  • A personal attack. 

ipsedixitism

noun

  • An unfounded, false and dogmatic assertion; an ipse dixit. 

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