Roger vs dork

Roger

name
  • A male given name from the Germanic languages. 

  • A surname originating as a patronymic. 

  • Jolly Roger (pirate flag) 

dork

noun
  • A quirky, silly and/or stupid, socially inept person, or one who is out of touch with contemporary trends. Often confused with nerd and geek, but does not imply the same level of intelligence. 

  • A penis. 

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