idealism vs idealization

idealism

noun
  • The practice or habit of giving or attributing ideal form or character to things; treatment of things in art or literature according to ideal standards or patterns;—opposed to realism. 

  • The property of a person of having high ideals that are usually unrealizable or at odds with practical life. 

  • An approach to philosophical enquiry, which asserts that direct and immediate knowledge can only be had of ideas or mental pictures. 

idealization

noun
  • The act or process of idealizing. 

  • The representation of natural objects, scenes, etc., in such a way as to show their most important characteristics; the study of the ideal. 

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