coat vs heliotrope

coat

noun
  • A covering of material, such as paint.ᵂᵖ 

  • Canvas painted with thick tar and secured round a mast or bowsprit to prevent water running down the sides into the hold (now made of rubber or leather). 

  • A coat of arms.ᵂᵖ 

  • An outer garment covering the upper torso and arms.ᵂᵖ 

  • The habit or vesture of an order of men, indicating the order or office; cloth. 

  • A coat card. 

  • The fur or feathers covering an animal's skin.ᵂᵖ 

verb
  • To cover like a coat. 

  • To cover with a coating of some material. 

heliotrope

noun
  • A bloodstone (a variety of quartz). 

  • A light purple or violet colour. 

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

  • 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. 

adj
  • Light purple or violet. 

  • Keeping one’s face turned toward the sun. 

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