antithetical vs helping

antithetical

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

helping

noun
  • A portion or serving, especially of food that one takes for oneself, or to which one helps oneself. 

  • An amount or quantity 

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