malleability vs plasticity

malleability

noun
  • The quality or state of being malleable. 

  • The property by virtue of which a material can be extended in all directions without rupture by the application of load; a material's ability to be bent, formed, or shaped without cracking or breaking. 

  • a property of a cryptographic algorithms in which an adversary can alter a ciphertext such that it decrypts to a related plaintext 

plasticity

noun
  • The quality or state of being plastic. 

  • the property of a solid body whereby it undergoes a permanent change in shape or size when subjected to a stress exceeding a particular value (the yield value) 

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