boot boy vs instigator

boot boy

noun
  • One of a gang of violent hooligans who usually wear short-cropped hair and bovver boots. 

  • A boy who cleans boots and shoes. 

  • A boy who cares for a footballer's boots. 

instigator

noun
  • A person who intentionally instigates, incites, or starts something, especially one that creates trouble. 

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