heliotrope vs luster

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. 

luster

noun
  • Shine, polish or sparkle. 

  • Refinement, polish or quality. 

  • Lusterware. 

  • One who lusts or is inflamed with lust. 

  • A candlestick, chandelier, girandole, etc. generally of an ornamental character. 

  • A substance that imparts lustre to a surface, such as plumbago or a glaze. 

  • A fabric of wool and cotton with a lustrous surface, used for women's dresses. 

  • Brilliance, attractiveness or splendor. 

verb
  • To gleam, have luster. 

  • To give a coating or other treatment to impart physical luster. 

  • To give luster, distinguish. 

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