schoolgirl vs young man

schoolgirl

noun
  • A girl attending school. 

verb
  • To restrain in a schoolgirl pin. 

young man

noun
  • A term of endearment or address by adults for a young boy. 

  • Used other than figuratively or idiomatically: see young, man. 

How often have the words schoolgirl and young man occurred in a corpus of books? (source: Google Ngram Viewer )