fledgling vs schoolgirl

fledgling

noun
  • A young bird which has just developed its flight feathers (notably wings). 

  • An insect that has just fledged, i.e. undergone its final moult to become an adult or imago. 

  • An immature, naïve or inexperienced person. 

adj
  • Emergent or rising. 

  • Untried or inexperienced. 

schoolgirl

verb
  • To restrain in a schoolgirl pin. 

noun
  • A girl attending school. 

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