heliotrope vs vermilion

heliotrope

adj
  • Light purple or violet. 

  • Keeping one’s face turned toward the sun. 

noun
  • A light purple or violet colour. 

  • Particularly, a purple-flowered plant of the species Heliotropium arborescens. 

  • A bloodstone (a variety of quartz). 

  • An instrument, employed in triangulation, that uses a mirror to reflect sunlight toward another, very distant, surveyor. 

  • The fragrance of heliotrope flowers. 

  • A plant that turns so that it faces the sun. 

vermilion

adj
  • Having the color of the vermilion dye. 

  • Having a brilliant red colour. 

verb
  • To color or paint vermilion. 

noun
  • A vivid red synthetic pigment made of mercury sulfide, cinnabar. 

  • A type of red dye worn in the parting of the hair by married Hindu women. 

  • A bright orange-red colour. 

  • The red skin of the lips or its border with the skin of the face. 

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