quisquis vs whom

quisquis

pron
  • Whoever, whosoever. 

adj
  • Synonym of quisquous. 

whom

pron
  • The person(s) whom; whomever. 

  • As the object of a verb. 

  • As the object of a preposition. 

  • Used to refer to a previously mentioned person or people. 

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