antithetical vs concordant

antithetical

adj
  • Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of, antithesis; contrasted. 

concordant

adj
  • Intruding parallel to the bedding. 

  • Agreeing or harmonious; consistent (with). 

  • Preserving the sign. 

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