acculturate vs become similar

acculturate

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

  • To be changed by acculturation. 

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

become similar

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