dilute vs fledgling

dilute

adj
  • Having a low concentration. 

  • Of an animal: having a lighter-coloured coat than is usual. 

  • Weak; reduced in strength by dilution; diluted. 

verb
  • To cause the value of individual shares or the stake of a shareholder to decrease by increasing the total number of shares. 

  • To become attenuated, thin, or weak. 

  • To weaken, especially by adding a foreign substance. 

  • To make thinner by adding solvent to a solution, especially by adding water. 

noun
  • An animal having a lighter-coloured coat than is usual. 

fledgling

adj
  • Untried or inexperienced. 

  • Emergent or rising. 

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. 

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