floss vs lanugo

floss

noun
  • The fibres covering a corncob etc.; the loose downy or silky material inside the husks of certain plants, such as beans. 

  • Fluid glass floating on iron in the puddling furnace, produced by the vitrification of oxides and earths which are present. 

  • A small stream of water. 

  • A body feather of an ostrich. 

  • The common rush (Juncus effusus). 

  • Any thread-like material having parallel strands that are not spun or wound around each other. 

  • A thread used to clean the gaps between the teeth. 

  • Raw silk fibres. 

  • Spun sugar or cotton candy, especially in the phrase "candy floss". 

  • A dance move in which the dancer repeatedly swings their arms, with clenched fists, from the back of their body to the front, on each side. 

verb
  • To show off, especially by exhibiting one's wealth or talent. 

  • To clean the area between the teeth using floss. 

  • To perform the floss dance move. 

lanugo

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

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