counterknowledge vs half-truth

counterknowledge

noun
  • Misinformation packaged to look like fact. 

half-truth

noun
  • A deceptive statement, especially one that is only partly true, is incomplete, misrepresents reality by telling part of the truth, or alters the time sequence of truths. 

How often have the words counterknowledge and half-truth occurred in a corpus of books? (source: Google Ngram Viewer )