decoration vs tarnish

decoration

noun
  • Specifically, any mark of honor to be worn upon the person, as a medal, cross, or ribbon of an order of knighthood, bestowed for services in war, great achievements in literature, art, etc. 

  • The use of exotic sugars as decoys to distract the immune system of a host 

  • Any item that adorns, enriches, or beautifies; something added by way of embellishment or ornamentation. 

  • The act of adorning, embellishing, or honoring; ornamentation. 

tarnish

verb
  • To compromise, damage, soil, or sully. 

  • To lose its lustre or attraction; to become dull. 

  • To oxidize or discolor due to oxidation. 

noun
  • Oxidation or discoloration, especially of a decorative metal exposed to air. 

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