heliotrope vs zest

heliotrope

noun
  • The fragrance of heliotrope flowers. 

  • 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. 

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

adj
  • Light purple or violet. 

  • Keeping one’s face turned toward the sun. 

zest

noun
  • General vibrance of flavour. 

  • The outer skin of a citrus fruit, used as a flavouring or garnish. 

  • Enthusiasm; keen enjoyment; relish; gusto. 

  • The woody, thick skin enclosing the kernel of a walnut. 

verb
  • To scrape the zest from a fruit. 

  • To make more zesty. 

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