bicker vs in-joke

bicker

noun
  • A wrangle; also, a noise, as in angry contention. 

  • A skirmish; an encounter. 

  • The process by which selective eating clubs at Princeton University choose new members. 

  • A wooden drinking-cup or other dish. 

verb
  • To quarrel in a tiresome, insulting manner. 

  • To skirmish; to exchange blows; to fight. 

  • To brawl or move tremulously, quiver, shimmer (of a water stream, light, flame, etc.) 

  • To patter. 

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”) 

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