acculturate vs naturalize

acculturate

verb
  • To be changed by acculturation. 

  • To cause (a person) to acquire the culture of society, starting at birth. 

  • To change the culture of (a person) by the influence of another culture, especially a more dominant culture. 

naturalize

verb
  • To acclimatize an animal or plant. 

  • To make (a word) a natural part of the language, using the native homologue of each phoneme (and often for each morpheme) of the imported word (e.g., native inflections). 

  • To study nature. 

  • To limit explanations of a phenomenon to naturalistic ones and exclude supernatural ones. 

  • To grant citizenship to someone not born a citizen. 

  • To make natural 

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