enamel vs heliotrope

enamel

noun
  • A cosmetic intended to give the appearance of a smooth and beautiful complexion. 

  • The hard covering on the exposed part of a tooth. 

  • An opaque, glassy coating baked onto metal or ceramic objects. 

  • A coating that dries to a hard, glossy finish. 

verb
  • To form a glossy surface like enamel upon. 

  • To variegate with colours, as if with enamel. 

  • To coat or decorate with enamel. 

  • To disguise with cosmetics, as a woman's complexion. 

heliotrope

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. 

adj
  • Light purple or violet. 

  • Keeping one’s face turned toward the sun. 

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