casuistry vs misconstruction

casuistry

noun
  • A specious argument designed to defend an action or feeling. 

  • The process of answering practical questions via interpretation of rules, or of cases that illustrate such rules, especially in ethics; case-based reasoning. 

misconstruction

noun
  • An ungrammatical phrase. 

  • A misconstrual or misinterpretation. 

  • A mistaken or faulty construction. 

  • A misunderstanding or misinterpretation resulting from the use of the wrong meaning of a word that has multiple meanings. 

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