boot boy vs wag

boot boy

noun
  • A boy who cleans boots and shoes. 

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

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

wag

verb
  • To swing from side to side, such as of an animal's tail, or someone's head, to express disagreement or disbelief. 

  • To play truant from school. 

noun
  • A witty person. 

  • An oscillating movement. 

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