ermine vs herald

ermine

noun
  • Any of various moths, especially in the family Yponomeutidae 

  • A white field with black spots. 

  • The white fur of this animal, traditionally seen as a symbol of purity and used for judges' robes. 

  • A weasel found in northern latitudes (Mustela erminea in Eurasia, Alaska, and the Arctic, Mustela haidarum in Haida Gwaii, Mustela richardsonii in the rest of North America); its dark brown fur turns white in winter, apart from the black tip of the tail. 

  • The office of a judge. 

adj
  • In blazon, of the colour ermine (white with black spots). 

verb
  • To clothe with ermine. 

herald

noun
  • A moth of the species Scoliopteryx libatrix. 

  • A harbinger, giving signs of things to come. 

  • A handbill consisting of an advertisement. 

  • An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. 

  • A messenger, especially one bringing important news. 

verb
  • To proclaim or announce an event. 

  • To greet something with excitement; to hail. 

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