acculture vs accustom

acculture

verb
  • To familiarize oneself with, and adopt a new culture, especially by an immigrant 

accustom

verb
  • To make familiar by use; to cause to accept; to habituate, familiarize, or inure. 

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