peroxide vs platinum

peroxide

noun
  • Any compound containing the functional group R-O-O-R'. 

  • Hydrogen peroxide, especially when in an aqueous solution used as a bleach. 

  • A divalent radical or anion containing two oxygen atoms linked by a covalent bond; any substance containing this group which yields hydrogen peroxide when treated with an acid. 

verb
  • To treat (something) with hydrogen peroxide, especially hair in order to bleach it. 

platinum

noun
  • A platinum-based drug: a platin. 

  • A single or album that has achieved platinum sales, i.e. over 1 million or 2 million. 

  • A whitish grey colour, like that of the metal. 

  • The chemical element with atomic number 78 and symbol Pt; a dense, malleable, ductile, highly unreactive, silverish-white transition metal of great value. 

adj
  • Of a musical recording that has sold over one million copies (for singles), or two million (for albums). 

  • Very expensive, or of very high quality 

  • Of a whitish grey colour, like that of the metal. 

verb
  • to reach platinum level in a game 

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