boot boy vs scapegrace

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. 

scapegrace

noun
  • A wild and reckless person (especially a boy); a scoundrel. 

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