comprehension vs soundness

comprehension

noun
  • Thorough understanding. 

  • The inclusion of nonconformists within the Church of England. 

  • The totality of intensions, that is, attributes, characters, marks, properties, or qualities, that the object possesses, or else the totality of intensions that are pertinent to the context of a given discussion. 

  • A compact syntax for generating a list in some functional programming languages. 

soundness

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

  • The result or product of being sound. 

  • 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. 

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