efflorescence vs sheen

efflorescence

noun
  • An encrustation of soluble salts, commonly white, deposited on the surface of stone, brick, plaster, or mortar; usually caused by free alkalies leached from mortar or adjacent concrete as moisture moves through it. 

  • The production of flowers. 

  • Rapid flowering of a culture or civilisation etc. 

  • The formation of a powdery surface on crystals, as a hydrate is converted to anhydrous form by losing loosely bound water of crystallization to the atmosphere. 

  • A redness, rash, or eruption on the skin. 

  • An encrustation of soluble salts, deposited on rock or soil by evaporation; often found in arid or geothermal environments. 

sheen

noun
  • A thin layer of a substance (such as oil) spread on a solid or liquid surface. 

  • Splendor; radiance; shininess. 

  • The letter ش in the Arabic script. 

verb
  • To shine; to glisten. 

adj
  • Beautiful, good-looking, attractive; radiant; shiny. 

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