egret vs pappus

egret

noun
  • A plume or tuft of feathers worn as a part of a headdress, or anything imitating such an ornament. 

  • Any of various wading birds of the genera Egretta or Ardea that includes herons, many of which are white or buff, and several of which develop fine plumes during the breeding season. 

  • The flying feathery or hairy crown of seeds or achenes, such as the down of the thistle. 

pappus

noun
  • The first hair on the chin. 

  • The markedly reduced sepals of an Asteraceae floret that take the form of trichomes or scale attached to the ovary or seed. 

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