inflection vs pronunciation

inflection

noun
  • A change in pitch or tone of voice. 

  • Change in the form of a word (morphologic change) to express different grammatical categories. 

  • Diffraction. 

  • Any form produced by such an instance of a change, such as the principal parts for any given stem: any of the declined or conjugated forms that constitute its declension or conjugation. 

  • An affix representing such an instance. 

  • A turning away from a straight course. 

  • A change in curvature from concave to convex or from convex to concave. 

  • An instance of such change. 

pronunciation

noun
  • The formal or informal way in which a word is made to sound when spoken. 

  • The way in which the words of a language are made to sound when speaking. 

  • The act of pronouncing or uttering a vocable. 

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