fanboy vs otaku

fanboy

noun
  • A male fan who is obsessive about a particular subject (especially, something or someone in popular entertainment media). 

verb
  • To worship, support, drool over the object of affection; to be a fanboy. 

otaku

noun
  • One with an obsessive interest in something, particularly (originally derogatory) obsessive Japanese fans of anime or manga. 

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