antithetical vs convergent

antithetical

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

convergent

adj
  • That converges or focuses; converging 

  • Of a sequence or series in a topological space, converging to a (finite, proper) limit. 

noun
  • The rational number obtained when a continued fraction has been terminated after a finite number of terms. 

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