concordant vs wrongheaded

concordant

adj
  • Intruding parallel to the bedding. 

  • Agreeing or harmonious; consistent (with). 

  • Preserving the sign. 

wrongheaded

adj
  • Having an obstinately (persistently, stubbornly) perverse/erroneous opinion or judgement. 

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