fanboy vs fancier

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. 

fancier

noun
  • One who fancies; a person with a special interest, attraction or liking for something. 

  • A person who breeds or grows a particular animal or plant for points of excellence. 

  • One who fancies or imagines. 

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