alloy vs denature

alloy

verb
  • To mix or combine; often used of metals. 

  • To impair or debase by mixture. 

  • To reduce the purity of by mixing with a less valuable substance. 

noun
  • A metal that is a combination of two or more elements, at least one of which is a metal. 

  • An admixture; something added which stains, taints etc. 

  • Fusion, marriage, combination. 

denature

verb
  • To combine fissile material with nonfissile material in order to prevent its use in an atomic weapon. 

  • To take away a natural characteristic or inherent property of (a thing or a person). 

  • To alter its original form or state, especially of a protein, by heat, acidity etc. 

  • To add something to (alcohol) that makes it unsuitable for consumption but leaves it suitable for most other purposes. 

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