nitpicking vs purism

nitpicking

noun
  • The painstaking process of removing nits (lice eggs) from someone's hair. 

  • A process of finding or pointing out tiny details or errors, particularly if the pointed-out details seem insignificant or irrelevant to all but the finder. 

purism

noun
  • An example of purist language etc. 

  • The desire to use words and forms derived from what is considered the native element in a given language instead of elements considered borrowed or foreign. 

  • An insistence on the traditionally correct way of doing things. 

  • An insistence on pure or unmixed forms. 

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