soundness vs vulnerability

soundness

noun
  • The result or product of being sound. 

  • The property (of an argument) of not only being valid, but also of having true premises. 

  • The property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever T⊢𝜙 is true, then T vDash 𝜙 must also be true, for any wff φ of logic L. 

  • The state or quality of being sound. 

vulnerability

noun
  • The state of being vulnerable; susceptibility to attack or injury, either physical or emotional; the state or condition of being weak or poorly defended. 

  • A weakness which allows an attacker to reduce a system's security. 

  • A specific weakness in the protections or defences surrounding someone or something. 

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