demoiselle vs nymph

demoiselle

noun
  • A damselfly of the family Calopterygidae. 

  • A young lady; a damsel; a lady's maid. 

  • The Numidian crane (Grus virgo). 

nymph

noun
  • The larva of certain insects. 

  • Any female nature spirit associated with water, forests, grotto, wind, etc. 

  • Any of various butterflies of the family Nymphalidae. 

  • A young girl, especially one who is attractive, beautiful or graceful. 

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