fur vs lanugo

fur

noun
  • Pubic hair. 

  • 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. 

  • 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. 

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

  • To level a surface by applying furring to it. 

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

lanugo

noun
  • Soft down or fine hair, specifically that covering the human foetus or a tumorous area. 

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