fledge vs fur

fledge

verb
  • To grow, cover or be covered with feathers. 

  • To complete the last moult and become a winged adult insect. 

  • To decorate with feathers. 

  • To care for a young bird until it is capable of flight. 

fur

verb
  • To become covered with fur or a fur-like coating. 

  • To cover with fur or a fur-like coating. 

  • To level a surface by applying furring to it. 

noun
  • The hairy coat of various mammal species, especially when fine, soft and thick. 

  • The layer of epithelial debris on a tongue. 

  • Rabbits and hares, as opposed to partridges and pheasants (called feathers). 

  • The hairy skin of an animal processed into clothing for humans. 

  • Pubic hair. 

  • A thick pile of fabric. 

  • The soft, downy covering on the skin of a peach. 

  • Sexual attractiveness. 

  • A pelt used to make, trim or line clothing apparel. 

  • The deposit formed on the interior of boilers and other vessels by hard water. 

  • A furry; a member of the furry subculture. 

  • One of several patterns or diapers used as tinctures. 

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