in-joke vs jeer

in-joke

noun
  • Synonym of inside joke (“a joke that is understood or meant to be understood only by certain people who are aware of the details”) 

jeer

noun
  • A mocking remark or reflection. 

  • An assemblage or combination of tackles, for hoisting or lowering the yards of a ship. 

  • A gear; a tackle. 

verb
  • To utter sarcastic or mocking comments; to speak with mockery or derision; to use taunting language. 

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